From the A1
Exit 3 (just south of the Galleria Tunnel) take A414 towards St. Albans. The first junction is an extended roundabout. You need to turn right at the beginning but will find no turning. Continue to the end of it and come back on yourself. Take the left turn to "Smallford". Continue over a hump backed bridge and turn left at the first roundabout. Lyon Way is the first road on the left between the Honda and Nissan Garages. Caslon House is half way down on the left.

From the M25
Exit 22 take the A1081 towards St. Albans. At the first junction turn right on the A414 to Hatfield. The first junction is an extended roundabout. You need to turn left at the far end marked to "Smallford". Continue over a hump backed bridge and turn left at the first roundabout. Lyon Way is the first road on the left between the Honda and Nissan Garages. Caslon House is half way down on the left.

From the M1 Southbound
At Junction 7 take the M10 South. At the end take the second exit from the roundabout, the A414 to Hatfield. At the first junction continue on the A414 to Hatfield. The next junction is an extended roundabout. You need to turn left at the far end marked to "Smallford". Continue over a hump backed bridge and turn left at the first roundabout. Lyon Way is the first road on the left between the Honda and Nissan Garages. Caslon House is half way down on the left.

From the M1 Northbound
At Junction 6 take the A405 North. At the roundabout turn right on the M25 (Eastbound).  At the first junction, Exit 22, take the A1081 towards St. Albans. At the first junction turn right on the A414 to Hatfield. The first junction is an extended roundabout. You need to turn left at the far end marked to "Smallford". Continue over a hump backed bridge and turn left at the first roundabout. Lyon Way is the first road on the left between the Honda and Nissan Garages. Caslon House is half way down on the left.