"I'm not going to rush into something, as a small business owner and entrepeneur I don't have some of the resources of the conglomerates on the high street so we're having to take our time."
Mr Kaye is also busy working on new developments foir his other establishment, Bites Coffee House, in Finchley.
Popular sandwich chains dominated the high street lunchtime market last year, with Pret a Manger posting record sales of £676.2million.