Britain has a system of passenger rail companies that operate various regional routes, all of which operate under the National Rail moniker. In our case, we were travelling with Virgin East Coast Rail, in First Class.
Being in First Class we had use of the First Class Lounge at Newcastle Station. This is no airline lounge, so there's not much to report here. It was a pretty basic space, but featured better seating than the platform:
An espresso machine and a cooler of drinks (water and juice):
And some shortbread biscuits:
There's also a private bathroom down the hall.
The train experience itself was pretty basic, but comfortable. First class seating was arranged in a 1-2 configuration with some seats facing forward and some back.