UK Online Marketplaces: The Full List for Sellers (2026)

The full list at a glance

Tier 1: the open giants

eBay UK

Still the default UK channel — open registration, every category, enormous audience. Category-based final value fees plus a small per-order fee for business sellers (full breakdown in our eBay fees guide). Competition is fierce; margins depend on disciplined stock control.

Amazon UK

The biggest audience and the sharpest edges: referral fees around 8–15%, optional FBA fulfilment, and a platform that retails against its own sellers. Works best for branded goods at volume — see selling on Amazon and eBay together.

Etsy & TikTok Shop

Etsy owns handmade/vintage/craft; TikTok Shop turns content into impulse checkout and can move startling volume in video-friendly categories — with matching volatility. Guides: Etsy · TikTok Shop.

Tier 2: the retail marketplaces (the quiet opportunity)

The most under-exploited development in UK ecommerce: household-name retailers opening their sites to third-party sellers, almost all on Mirakl:

• Tesco Marketplace — grocery-scale mainstream traffic
• B&Q Marketplace — the DIY/garden category king
• Screwfix Marketplace — trade tools with high repeat purchase
• Currys Marketplace — electronics and appliances
• Superdrug / Debenhams / ManoMano — beauty, fashion-home, DIY respectively

Common traits: curated applications (established sellers with compliance paperwork and clean product data), category commissions instead of listing fees, retail-grade service expectations — and dramatically thinner competition than eBay or Amazon. One Mirakl integration serves several of them, which is why sellers who get one often expand to three or four.

Tier 3: specialists

• OnBuy — UK-owned, no listing fees, never retails against you; the lowest-risk expansion channel
• Wayfair — wholesale dropship for home brands; different economics entirely
• Not On The High Street — curated gifting, strong Q4
• Faire — wholesale B2B: retailers buy your products to resell (our Faire guide)
• Vinted / Depop — consumer fashion resale; limited business tooling

Choosing your next channel

1. Match category first. DIY range → B&Q before anything else. Handmade → Etsy/NOTHS. Home brand → Wayfair conversation worth having.
2. Sequence by entry difficulty. Open channels (eBay, OnBuy, Etsy, TikTok) build the track record that curated applications (Tesco, B&Q) want to see.
3. Price per channel. Every marketplace has a different fee stack; a single blanket price leaks margin somewhere. Channel-specific price rules solve it.
4. Cap channels at your operational capacity — then raise the cap with software. The real constraint on "how many marketplaces" is stock accuracy, not listing effort.

The operational truth about selling on many marketplaces

Every channel in this list is additive demand against the same physical stock. Without real-time sync, each new marketplace multiplies the odds that two buyers purchase your last unit simultaneously — and curated marketplaces punish cancellation defects hardest, on exactly the accounts that were hardest to open.

This is the problem Salync exists for: one catalogue and one stock ledger connected to eBay, Amazon, Shopify, Etsy, OnBuy, TikTok Shop and the Mirakl retail marketplaces (Tesco, B&Q, Screwfix, Currys, Wayfair and more — full list). A sale anywhere updates everywhere in seconds; orders from every channel land in one dispatch queue. Free up to 50 SKUs.