The procedure is to email This email address is being protected from spambots. You need JavaScript enabled to view it. giving links to your music plus info on your location and personnel. Steve gets at least a dozen applications per week, and so only responds when he's interested, otherwise he'd spend a tiresome amount of time saying "Thanks but no thanks". He does listen to everything that comes in (I know this as I live downstairs from him). If the first track doesn't appeal he'll try the second and so on. He really is fair. The rule of thumb is that if you don't hear from him in about six weeks then you won't, but if you do we're looking at dates about six months ahead. Not getting a booking doesn't necessarily mean you're not good enough; even if every band were excellent, and even if every band fitted within our range of genres (which is largely roots- and jazz-based but includes may more) it's just not possible to put that many bands on.
A footnote: sending repeated emails or phoning the bar and hassling the staff, who know nothing of this, will not work in your favour.