I reckon it's Essex, not Yorkshire: Westcliff-on-Sea (Southend). Allen's Library was at 174 Hamlet Court Road. Bert is crossing Burdett Avenue on his way along Hamlet Court Road. Number 174 is now Athena Carpets. Here's the Google streetview picture from a roughly corresponding position. https://goo.gl/jApgxPOr maybe this view is better (see the shape of the windows on the other side at the far end) https://goo.gl/WkKszsA reference from the 1920's https://goo.gl/MZvHwhAnd one from 1950 https://goo.gl/8mUifc