Stay in London, visit Harry Potter Stuid Tour...is this doable?

[mummatotwo]

Were going to drive and stay in Watford but am now thinking we could stay in London then get the train to the studio - would this be from Watford Gap train station?

watford junction - a shuttle bus service from Watford Junction train station is available. you can train out from central london from euston

www.tfl.gov.uk