The nearest tube station is Old Street, which is on the Northern Line (Bank branch). There are loads of exits, so be sure to head for City Road (Exit 1).
Plenty of buses come to Old Street from all areas of London although we can't vouch for frequency. You'll probably wait for ages and then they'll all turn up at once.
In a word, don't! If you must brave the congestion charge and the traffic jams, you might find expensive on-street parking on Shepherdess Walk.
We're real fans of pedal power! We have a studio bike rack and a shower if you need to use one. You'd be more than welcome.