The Custom Boxes UK — London

3PLWOW is a third-party logistics provider operating as a fulfilment centre in Newcastle upon Tyne and fulfilment centre North East, based at Benton Square Industrial Estate. The company offers end-to-end ecommerce order fulfilment services including warehousing, pick and pack, shipping, inventory management, and returns processing from their 15,000+ pallet warehouse facility. 3PLWOW caters to businesses of all sizes, from those shipping as few as one order per month to high-volume operations exceeding 1,000 orders monthly. They handle a wide range of product categories including subscription boxes, clothing and shoes, books, CBD and supplements, electronic goods, dry foods and teas, hygiene goods, fabrics and linens, and more. The company integrates with major ecommerce platforms including Amazon, eBay, Shopify, WooCommerce, Etsy, Squarespace, BigCommerce, and Not On The High Street, with customisable API integrations available. 3PLWOW offers same-day dispatch with next-day delivery from as little as two pounds, alongside competitive pick and pack rates starting at 40 pence per order. They also provide specialist services including dropshipping fulfilment, Kickstarter and crowdfunding fulfilment, TikTok fulfilment, gift wrapping, and eco-friendly packaging options.

4 Corners Fulfilment & Prep Centre is a family-run ecommerce prep centre and fulfilment provider based in Birstall, near Batley in West Yorkshire. Operating from Unit 4 at Carr Mills on Bradford Road, the company offers a comprehensive range of services for online sellers including receiving, inspecting, counting, checking expiration dates, poly bagging, labelling, bubble wrapping and photography. As a fulfilment centre in Batley and the Yorkshire region, 4 Corners specialises in Amazon FBA prep, online arbitrage support, wholesale preparation, unique bundling and third-party logistics fulfilment. The company stores, picks, packs and ships orders on behalf of ecommerce businesses, with goods typically dispatched within 24 to 48 hours of receiving all required information. They work with UPS for collections from their secure unit. 4 Corners caters to ecommerce sellers at all stages, from those running businesses from spare rooms looking to free up time for sourcing, through to established brands seeking scalable fulfilment solutions. The company operates Monday to Friday, 08:30 to 16:30, and provides each client with a private communication channel for updates on stock and any issues with incoming goods.

4filment Ltd is a full-service fulfilment centre in London, based in West London at Oliver Business Park, NW10. Specialising in ecommerce and merchandise fulfilment, the company serves curated brands across fashion and apparel, media and entertainment, cosmetics, retail and hospitality, and homewear sectors. As a fulfilment centre London operators can rely on, 4filment provides end-to-end pick, pack, and ship services with same-day dispatch and a 99.8% picking accuracy rate, having fulfilled over 100,000 orders in 2025. Their purpose-built facility uses individual barcode scanning and two-step verification to ensure near-perfect accuracy, with batch picking enabling up to 5,000 individual daily orders per client. Services extend beyond standard fulfilment to include full ecommerce management with backend data and inventory control, product processing covering sorting, quality control, barcoding and labelling, wholesale B2B fulfilment for boutiques through to major department stores, and dedicated returns management with inspection and inventory reintegration. The company integrates with major ecommerce platforms including Shopify, WooCommerce, Amazon, eBay, Etsy, and Squarespace, and ships via courier partners such as DPD, DHL, Royal Mail, UPS, and FedEx. With over 50 active clients ranging from startups to large-scale operations, 4filment offers consultancy on packaging, manufacturing, and shipping to help brands scale efficiently.