From London:

By Car:
M25 to Junction 12, Exit onto M3 towards Southampton. At Junction 4 take the A331 exit to Guildford/Farnham. At Frimley Interchange, take the 2nd exit onto A331 heading to Guildford/Farnham. Then A31. Go for 3.3 miles and at the roundabout, take the 1st exit onto A325.

By Rail:
From Waterloo take South West Trains to Farnham. From Farnham Station take a taxi to the office address. Only 5 min taxi journey.