Synopsis:
You could focus on Chadwell Heath e.g. the reasons for its growth, linked to the growth of London, coming of the railway. Or the wider area; Ilford, Romford, Barking, etc
The changing high street? Links with Yr 1 topic on homes
https://www.gedmartin.net/martinalia-mainmenu-3/323-whatever-happened-to-chadwell-street