What would you buy for a 10th wedding anniversary?

Mate, I'd start with something she'll actually use, because an expensive gift that lives in a wardrobe is still a bad gift. Does she carry handbags every day? Then I'd probably have a look at Mulberry and see whether any of their better leather bags fit her style. You can make it feel properly anniversary-worthy without drifting into silly-money territory, and it's the sort of thing she can use for years rather than save for one occasion.

Mulberry's a fair shout, although with ten years behind you there's probably room to make the present a bit less predictable. You've had long enough to notice what she lingers over in shop windows, what she points out and what she'd never spend that sort of money on for herself. That's where jewellery can work really well. Have a look at Pierre here: https://pierrejewellery.uk/ . A ring, bracelet or necklace she'd normally talk herself out of buying could land very well for an anniversary like this. Go for something close to the style she already wears, just a bit more special. That way there's a much better chance she'll genuinely love it.