Elstree and Borehamwood Station is 5 minutes walk from Calleo House. 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. Exit Elstree station ticket office and turn immediately left. Down the steps and under the tunnel, through into the station car park. Exit the car park by walking diagonally from left to right across the car park. Turn left into Theobald Street, cross the mini roundabout - Calleo House is on the left directly opposite the Kinetic Business Centre.