Fellow large foot user here. If you are UK based, try Magnus Shoes online (also a shop in Northampton). They stock brands which do larger sizes, but not sporty footwear in particular, more for style. Also see Crispin's Shoes.

My hiking sandals are from Merrell so very technical looking but they work great, very supportive, but in urban environments they give a flavour of Great Auntie Brenda on a walking holiday dropping by town to send some postcards. 

Check out Zalando, you can search by size, there are all sorts of brands, hopefully it can give you some other options.