Car  Coming from Kings Cross Station headed east, take the turn off on Kings Cross Road. Then go down the road and KCBC in at the bottom of the road just after the first traffic lights going to Vernon Square. There is some meter paid parking which is free on Saturday from 1:30pm and all day Sunday. The rest is residency parking so if possible it might be best to use other means of transport. 

Buses  There are plenty of buses that go to Kings Cross station such as  Route 46, 73, 91, 259,17, 205 and others. Most pass through Pentonville Road and KCBC is a 4 minute walk from there. 

Train  KCBC is a 10 minute walk from Kings Cross Station and St Pancras International Station. It's also roughly 16 minutes from Euston Station.