UK buying shortlist
Best Office Chairs Under £400 in the UK (2026)
Four exact current configurations selected for office-chair configurations with an independently verified current exact-product price at or below £400, with source, image and acquisition evidence kept configuration-bound.
Quick answer · Top 4
Compare all four before reading the full details
Open a product to review its fit, limitations and buying checks before choosing a retailer.
Pick 1 - Sihoo M102C Ergonomic Chair exact configuration
Sihoo M102C Ergonomic Chair — Black — M102C-M101
Best for:Exact direct-store configuration with the manufacturer-listed feature: The Sihoo M102C is designed to offer excellent lower back support while maintaining an elegant and minimalist appearance.
Trade-off:The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Open lead reviewPick 2 - Sihoo M18 Classic Office Chair exact configuration
Sihoo M18 Classic Office Chair — Black — M18-M148
Best for:Exact direct-store configuration with the manufacturer-listed feature: a breathable mesh seatback
Trade-off:The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Open shortlist reviewPick 3 - Sihoo M57 Classic Office Chair exact configuration
Sihoo M57 Classic Office Chair — Black — M57-M111
Best for:Exact direct-store configuration with the manufacturer-listed feature: Max load 150 kg / 330 lbs.
Trade-off:The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Open shortlist reviewPick 4 - Sihoo B100 Pro Ergonomic Office Chair With Flip-Up Armrest exact configuration
Sihoo B100 Pro Ergonomic Office Chair With Flip-Up Armrest — Black / Footrest — B100-PRO-M101-JT
Best for:Exact direct-store configuration with the manufacturer-listed feature: Dynamic Lumbar Support That Moves With You .
Trade-off:The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Open shortlist reviewCompare the four configurations and rule out a poor fit before choosing a retailer.
Compare all fourThe shortlist
Four options, with the trade-offs visible
Use the fit, limitations and checkout checks before opening a retailer page. Confirm the current price, stock, delivery and returns with the retailer.
Pick 1
First comparison point
Sihoo M102C Ergonomic Chair exact configuration
Sihoo M102C Ergonomic Chair — Black — M102C-M101
Verdict
Sihoo M102C Ergonomic Chair fills role 1 with exact manufacturer fact “Sihoo M102C Ergonomic Chair”.
Highlights
- Exact direct-store configuration with the manufacturer-listed feature: The Sihoo M102C is designed to offer excellent lower back support while maintaining an elegant and minimalist appearance.
Drawbacks
- The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Buyer fit
Best for
- Exact direct-store configuration with the manufacturer-listed feature: The Sihoo M102C is designed to offer excellent lower back support while maintaining an elegant and minimalist appearance.
Not for you if
- The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Check before buying
- Confirm M102C-M101, the selected display, ports, stand, stock, warranty and returns.
Pick 2
Sihoo M18 Classic Office Chair exact configuration
Sihoo M18 Classic Office Chair — Black — M18-M148
Verdict
Sihoo M18 Classic Office Chair fills role 2 with exact manufacturer fact “Sihoo M18 Classic Office Chair”.
Highlights
- Exact direct-store configuration with the manufacturer-listed feature: a breathable mesh seatback
Drawbacks
- The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Buyer fit
Best for
- Exact direct-store configuration with the manufacturer-listed feature: a breathable mesh seatback
Not for you if
- The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Check before buying
- Confirm M18-M148, the selected display, ports, stand, stock, warranty and returns.
Pick 3
Sihoo M57 Classic Office Chair exact configuration
Sihoo M57 Classic Office Chair — Black — M57-M111
Verdict
Sihoo M57 Classic Office Chair fills role 3 with exact manufacturer fact “Sihoo M57 Classic Office Chair”.
Highlights
- Exact direct-store configuration with the manufacturer-listed feature: Max load 150 kg / 330 lbs.
Drawbacks
- The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Buyer fit
Best for
- Exact direct-store configuration with the manufacturer-listed feature: Max load 150 kg / 330 lbs.
Not for you if
- The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Check before buying
- Confirm M57-M111, the selected display, ports, stand, stock, warranty and returns.
Pick 4
Sihoo B100 Pro Ergonomic Office Chair With Flip-Up Armrest exact configuration
Sihoo B100 Pro Ergonomic Office Chair With Flip-Up Armrest — Black / Footrest — B100-PRO-M101-JT
Verdict
Sihoo B100 Pro Ergonomic Office Chair With Flip-Up Armrest fills role 4 with exact manufacturer fact “Sihoo B100 Pro Ergonomic Office Chair With Flip-Up Armrest”.
Highlights
- Exact direct-store configuration with the manufacturer-listed feature: Dynamic Lumbar Support That Moves With You .
Drawbacks
- The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Buyer fit
Best for
- Exact direct-store configuration with the manufacturer-listed feature: Dynamic Lumbar Support That Moves With You .
Not for you if
- The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Check before buying
- Confirm B100-PRO-M101-JT, the selected display, ports, stand, stock, warranty and returns.
Top 4 comparison
Compare the useful differences, trade-offs and final checks side by side.
Before you compare
Check these first
- 1Confirm the exact model, route fact, physical fit, supplied parts, stock, warranty and returns.
- 2Use independent exact-model testing for measured performance, safety, durability, comfort, noise and reliability.
Your four roles
1Sihoo M102C Ergonomic Chair exact configurationSihoo M102C Ergonomic Chair — Black — M102C-M101Exact direct-store configuration with the manufacturer-listed feature: The Sihoo M102C is designed to offer excellent lower back support while maintaining an elegant and minimalist appearance.
Trade-off:The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Not ideal for:The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Check:Confirm M102C-M101, the selected display, ports, stand, stock, warranty and returns.
2Sihoo M18 Classic Office Chair exact configurationSihoo M18 Classic Office Chair — Black — M18-M148Exact direct-store configuration with the manufacturer-listed feature: a breathable mesh seatback
Trade-off:The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Not ideal for:The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Check:Confirm M18-M148, the selected display, ports, stand, stock, warranty and returns.
3Sihoo M57 Classic Office Chair exact configurationSihoo M57 Classic Office Chair — Black — M57-M111Exact direct-store configuration with the manufacturer-listed feature: Max load 150 kg / 330 lbs.
Trade-off:The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Not ideal for:The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Check:Confirm M57-M111, the selected display, ports, stand, stock, warranty and returns.
4Sihoo B100 Pro Ergonomic Office Chair With Flip-Up Armrest exact configurationSihoo B100 Pro Ergonomic Office Chair With Flip-Up Armrest — Black / Footrest — B100-PRO-M101-JTExact direct-store configuration with the manufacturer-listed feature: Dynamic Lumbar Support That Moves With You .
Trade-off:The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Not ideal for:The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value.
Check:Confirm B100-PRO-M101-JT, the selected display, ports, stand, stock, warranty and returns.
| Pick | Pick role | Best for | Avoid if | Key trade-off | Check before buying | Warranty/support status | Review/evidence basis |
|---|---|---|---|---|---|---|---|
| 1. Sihoo M102C Ergonomic Chair — Black — M102C-M101 | Sihoo M102C Ergonomic Chair exact configuration | Exact direct-store configuration with the manufacturer-listed feature: The Sihoo M102C is designed to offer excellent lower back support while maintaining an elegant and minimalist appearance. | The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value. | The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value. | Confirm M102C-M101, the selected display, ports, stand, stock, warranty and returns. | Confirm the manufacturer's current UK warranty and return terms for M102C-M101. • Exact official configuration and current UK Product surface checked 2026-08-21. | https://uk.sihoo.com/products/sihoo-m102-ergonomic-office-chair-next-level.js?variant=51569257382256 |
| 2. Sihoo M18 Classic Office Chair — Black — M18-M148 | Sihoo M18 Classic Office Chair exact configuration | Exact direct-store configuration with the manufacturer-listed feature: a breathable mesh seatback | The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value. | The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value. | Confirm M18-M148, the selected display, ports, stand, stock, warranty and returns. | Confirm the manufacturer's current UK warranty and return terms for M18-M148. • Exact official configuration and current UK Product surface checked 2026-08-22. | https://uk.sihoo.com/products/sihoo-m18-classic-office-chair.js?variant=53169101046128 |
| 3. Sihoo M57 Classic Office Chair — Black — M57-M111 | Sihoo M57 Classic Office Chair exact configuration | Exact direct-store configuration with the manufacturer-listed feature: Max load 150 kg / 330 lbs. | The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value. | The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value. | Confirm M57-M111, the selected display, ports, stand, stock, warranty and returns. | Confirm the manufacturer's current UK warranty and return terms for M57-M111. • Exact official configuration and current UK Product surface checked 2026-08-22. | https://uk.sihoo.com/products/sihoo-m57-classic-office-chair.js?variant=53169101341040 |
| 4. Sihoo B100 Pro Ergonomic Office Chair With Flip-Up Armrest — Black / Footrest — B100-PRO-M101-JT | Sihoo B100 Pro Ergonomic Office Chair With Flip-Up Armrest exact configuration | Exact direct-store configuration with the manufacturer-listed feature: Dynamic Lumbar Support That Moves With You . | The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value. | The exact manufacturer record establishes the listed configuration and feature only; it does not establish comparative performance, reliability, safety, comfort or value. | Confirm B100-PRO-M101-JT, the selected display, ports, stand, stock, warranty and returns. | Confirm the manufacturer's current UK warranty and return terms for B100-PRO-M101-JT. • Exact official configuration and current UK Product surface checked 2026-08-22. | https://uk.sihoo.com/products/sihoo-b100-pro-classic-office-chair.js?variant=53482266263920 |
Choose this if / Avoid this if
Rule out poor-fit options before comparing finer details.
Avoid if
- You need a complete whole-market survey rather than a source-closed exact cohort.
- You need an outcome that is not explicit in the manufacturer record.
Dealbreakers
- The selected fact belongs to a sibling or family record.
- The Product destination resolves to another exact identity.
Check before buying
- Confirm the exact model, route fact, physical fit, supplied parts, stock, warranty and returns.
- Use independent exact-model testing for measured performance, safety, durability, comfort, noise and reliability.
Choose another shortlist if
- Choose the broad category route when no specialist fact is decisive.
- Choose another specialist route when its exact workflow is the hard requirement.
When another role fits better
The first option is a useful starting point, not a universal winner. Move another role ahead when its use case, fit or ownership trade-offs match you better.
Known limitations
UK Shortlists has not conducted first-party performance, safety, durability, acoustic, ergonomic or reliability testing. This is a source-bound exact-configuration comparison.
Find another route
If your priorities differ, compare this starting point with Best Office Chairs in the UK (2026): Four Fit Routes.
How we chose
The checks behind the four picks
Qualification requires office-chair configurations with an independently verified current exact-product price at or below £400; the exact option fact and official image must remain attached to the selected identity.
- Step 1: Exact option-defining manufacturer fact
- Step 2: Same-record supporting facts
- Step 3: Distinct stable configuration role
- Step 4: Official image and current exact Product surface
Disclosure
Last reviewed: 21/08/2026
UK Shortlists may earn a commission when you use some retailer links. This does not increase the price you pay.
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Retailers cannot pay to change which products we recommend or their order.
Prices, stock, delivery and returns can change. Confirm the final details with the retailer before buying.
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Who checked this shortlist?
- Written / compiled by:
- UK Shortlists Editorial Team
- Reviewed by:
- UK Shortlists Editorial Team
- Last reviewed:
- 21/08/2026
- Review basis:
- Criteria-based comparison
We compare published product information, retailer details and the buying criteria shown above. UK Shortlists does not currently publish claims based on first-party product use, laboratory testing or long-term testing.
FAQs & alternatives
What does qualification establish?
It establishes that the exact selected manufacturer record publishes the route-defining and supporting product facts.
Does a listed specification prove real-world performance?
No. Measured outcomes require independent exact-model testing.
Are roles based on temporary discounts?
No. Roles are price-free and current purchase state is checked independently.
Also consider
- Use the broad category shortlist for a general starting point.
- Use another exact-feature route when a different workflow is decisive.
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Compare before choosing
Compare the routes that match your budget, priorities or setup before deciding which shortlist is the best fit.
Compare this next: Best Office Chairs in the UK (2026): Four Fit Routes
Other routes to compare
- Best Budget Office Chairs in the UK (2026)
- Best Office Chairs Under £300 in the UK (2026)
Use this if your fixed price ceiling is more important than broad feature depth.