There is definitely a gap in the market due to Brexit. At present I, as a Brit, have to sell bitcoins on Kraken for euros, and then use SEPA to send the euros to my sterling bank account (the bank does the conversion). I don't know if Britain will have the option of using SEPA once we officially Brexit - so if an exchange like yours could do direct payments in sterling, there would be a lot of Brits interested.