Head South down the A1 turning off at the first exit to Borehamwood. From the South use the A41. Turn North onto the A1 at Apex Corner and follow the signs to Borehamwood. Rail Elstree and Borehamwood Station is 3 minutes walk from PlaceWare's offices. It is on the Thameslink network served from London's Kings Cross Thameslink Station.
Trains are every half an hour or more frequent at busy times.
Air Heathrow and Stansted Airports are both about 35-40 minutes drive time. The Thameslink network has direct rail access to Luton and Gatwick Airports.