Don't expect London's nightlife but it's not boring either.
Harpers £10-15 entry, free b4 10pm but b4 10pm there's noone there and drinks are expensive. Strip Club downstairs on thursdays. Fun but v. expensive.
Cinderellas/Times/Dusk - it changes names a lot. Reasonably priced, great mondays - students nights (ridiculously cheap). Depends what u like - plays all sorts of music.
Fahrenheit - small more like pub but small dance floor as well - great, latin music
Piano Bar - haven't been there yet but heard it's great
Commuting - by buses, trains if going outside Guildford. To get to guildford - take a train from London Waterloo - take the one with limited stops though (30mins), the other one goes on for ages!