Size 12 women's trainers & sport shoes in the UK
You can get great deals on large size shoes at Amazon with a bit of patience. There's usually a good choice up to size 10 UK. Their own Amazon Essentials range now goes up to size 11 UK, with fashionable styles at great prices. The women's shoes department goes right up to 14 UK, although many of the largest sizes will either be Chinese brands or unisex. There's free returns within the UK for most shoes sold/fulfilled by Amazon & if you've got Prime, you can even try before you buy.
Adidas does lots of women's fashion sneakers, running & sports shoes up to size 11 us (9.5 uk, 44 eu). For those outside the US, I usually need to go up half a size in Adidas (9.5 uk/44 instead of 9), whereas I find Nike true to size. They are moving towards gender neutral collections, and some of their unisex/men's shoes go right up to women's size 20 us (18 uk). Ships to most of world. Free shipping & returns for most countries if you sign up for a free account. You can also get a first order discount by joining their mailing list. Generous student, healthcare & military discount available.
Nike does lots of women's shoes up to size 12 us (9.5 uk, 44.5 eu) online including customisable styles. Some unisex and men's styles go right up to 17 uk corresponding to a women's size 19.5 us. Sign up for a free Nike account to get free shipping & returns. Even better: you can return worn shoes & clothes to Nike if you're not happy - very rare! I find Nikes run true to size & last well. Read my Flex Experience Run 10s review.
Sustainable casual & running shoes made with natural materials. Several Allbird styles are unisex & available via the men’s collection up to size 15 US, 13 UK or 47 EU. Allbirds also offer free returns and a 30 day trial, so you can still get a refund even after wearing the shoes which is rare.
UK fashion and sportswear website shipping Europe wide. They typically have lots of casual and sports styles available in size 9 UK / 43 EU, about 50 styles in size 10-11 UK and a few styles in size 12+ UK. Worth a look for trainers and casual styles, as they often offer up to 75% discount.
Online fashion giant with a huge range of shoes in size 9 uk from several brands. Many of their own ASOS shoes go up to size 10 or 11 with a small number now in size 12 and 13 UK - all at very affordable prices. Some say larger sizes run small, so you may need to size up. Free delivery for most orders & free returns.
All taxes & duties paid for UK & US orders. Irish web store shipping worldwide specialising in shoe sizes 8-12 uk (up to 14 us or 46 eu). Some sandals and slippers available in size 13 uk (15 us). Wide range of brands & styles. UK, EU and North American orders can be returned to a local address.
UK shoe chain Office have plenty of size 9 uk shoes available online, mainly their own brand. I think Office size 9s are only available online though, as the check store stock feature only goes up to size 8. They convert their 9 UK to only 42 EU, but from searching reviews online Office shoes seem to be true to size. It would be great if customers could leave a review here to confirm this. Lots of unisex trainers available in sizes 9-12 UK from big brands including New Balance, Vans & Converse. Free UK delivery with £40 spend or free click and collect. Free store returns & cheap UK postal returns. Office ship to most of world, but delivery is expensive apart from certain European countries & International customers should use PayPal so they could get return costs refunded.
UK shop in Hungerford, Berkshire also selling online and by phone. Shoes and boots available up to size 12 uk (46 eu), in narrow through to wide width fittings (B - 8E). Most shoes are available in half sizes and all are made in Europe.