Greetings Cath!
Your mention of Bath brought to mind the youtube channel Global Cycling Network. They happen to be located in Bath, and have done some videos about restoring vintage bikes. While they are probably not a great resource, the videos might be a good introduction to the topic. Here's a video that is a start to a series on the restoration of one bike...


and an older one, from a presenter named Jon, who was quite fond of vintage bikes.


There is another youtuber channel called RJ the Bike Guy who covers all manner of bike repair.

Park Tools does some youtube videos on repair of vintage bikes too. They are usually very well done and helpful.

It might also be helpful to find some bike repair books that date back to the era of your bike. That's how many of us learned how to fix these bikes.

Steve in Peoria