You might not need it but a warning just in case - 1st Central don't give you 3rd party coverage on other vehicles. It's not clear when you sign up but I came across it in the terms when checking for something else.

With the possibility of finally getting a garage, I'm having a think about a project car to restore (probably prematurely!), so thought I'd have a nose round some forums. Thinking about a Series III 88" of some description but will see what's available around Northern Ireland nearer the time...