From the North exit the M25 at junction 10 onto the A3 towards Guildford. After 5 miles the A322 exit. Turn left at the lights at the bottom of the slip road (signposted to Guildford). Then immediately right at the next traffic lights (signposted A25/Guildford). Carry on straight ahead until you pass under a railway bridge. Continue to the roundabout and bear left onto the Guildford Business Park. Turn right at the mini roundabout. Regus is straight ahead of you.
From the South. As above arrive in Guildford on the A3, look out for the A320 turning right (instead of the A323 turning left).