The weather has definitely turned but I’d still like to get the kids out on a nice day, but they don’t have anything cycle-specific. Can anyone recommend somewhere that does cheap (as it will only be used occasionally) but still non-useless cycling stuff suitable for 6 and 8 year olds? Not so much roadie lycra but more durable and easily washed tops/bottoms.

Wiggle, tredz, Evans, and decathlon all do a fair bit of decent kids stuff.