Commuter trains

Hi, I'm new to this forum, and new to model trains. I am planning to build my first layout with a 1980s or '90s theme. I currently have one train, a Hornby tank engine. I like this train, but it does not fit my theme so I am looking for modern British commuter trains (particularly ones operated on the British east cost main line) and I find Hornby is quite lacking when it comes to modern electric trains. So, I'd like to ask if anyone could recommend a good brand for modern electric trains. Thanks.

Edit: I didn't realise this is a mostly an American forum. Perhaps I'll try somewhere else.