UK ONLY: Any giftware/card shop owners out there?

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I am planning on opening a giftware/card shop (funky/home made/fair
trade etc style) in Uxbridge, Gt London.

I am desperately trying to find some figures for use in my Business
Plan. I really need someone to tell me how much they turnover per
month/year and a bit about there business - i.e. location/size etc.

Anybody able to advise?

Thanks,
Paul.