This page is for model railways. Mainly 4 mm to the foot. Below is a link to the model railway club that I belong to. We model 4 mm to the foot with a track gauge of 18.83 mm. A direct conversion from prototype sizes.
The Engine Shed is a model railway's shop and is situated on Leytonstone High Road, about 7 minutes walk from Leytonstone Underground Station on the Central Line. Exit the station on the east side and walk to Leytonstone High Road, then turn right and the shop is on the right hand side opposite the methodist church.
CLAG is short for the Central London Area Group, which is a 4 mm to the foot model railway club (S4 scale standards). Do see the Central London Area Group's web site.