I have used an interior designer 'Blue +Green interiors'. Here website iswww.bluegreeninteriors.co.uk
This business is run by a friend who is a mum of two young boys, passionate about interiors forever (we used to discuss wallpapers during our nct days!) and is extremely talented.
I have used her services and Froso (who runs Blue + Green interiors) was very professional, affordable and delivered great results.
I would wholeheartedly recommend her (not because she is my friend, but because I like everyone else likes a great job at decent prices!)