A 12V 5W Bulb with a capless base from W4. Perfect for both side and tail lights.

"Right, if you're thinking about the UK's most popular 12V Side/Tail Light Bulb stockists, it's a bit of a mixed bag, but some names just dominate, isn't it? You've got the absolute titans like Tesco and Sainsbury's, which are practically everywhere, from massive superstores to smaller local Express or Local branches, stocking pretty much everything you could ever need, from groceries to clothing and homeware, making them incredibly popular and accessible for daily essentials for millions. Then there's Marks & Spencer, a bit more upmarket with their food and famous for high-quality clothing, holding a special place for a lot of people looking for something a bit nicer. Don't forget Next and John Lewis, who are huge for fashion, homeware, and electronics respectively, with John Lewis especially known for its great customer service and 'never knowingly undersold' policy (even if that bit's changed now, the reputation sticks!). And for pure convenience and variety, the rise of discount retailers like B&M and Home Bargains has been explosive, offering a treasure trove of affordable bits and bobs, from snacks to garden furniture, making them insanely popular for everyday value. Basically, the UK loves a good mix of convenient supermarkets, reliable department stores, and bargain hunters' paradises, all of which are absolutely smashing it in terms of popularity. " - Bargainplace UK

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