Big thanks for Karen Hooper-Keeley for flagging up this dress and jacket, that's actually to be found in Matalan of all places.
Inspired by 1960s Chanel, it's a slinline tweed check shift-style dress, which is available on its own or with the short jacket in the same cloth, complete with twin pocket detailing.
Stock online seems a little thin, so you might want to check out your local store. Cheap enough at £28 for the jacket and £20 for the dress.
Find out more at the Matalan website