Thanks everyone! Budget is probably around £50-60 but can go higher for the right dress, but it needs to have some interest and structure and also not be the usual polyester/ viscose mix that there is plenty of in the shops right now.
QuintanaRoo that dress from the shirt company looks really good! just wish it wasn't as expensive.
mnahmnah I like that Celtic & Co dress, but should probably mention too that I am short and petite so a max dress swamps me, so I was looking mostly as midi length or shorter