classic motorcycle forum

I am looking for advice on locations to buy a classic bike that needs upgrading/restroing, I have some experience working with bikes throughout my younger and more recent days as welll as a mechanical aptitude and a job in engineering. I have a good size garage and workshop type tools and am ready to take the step to go buy something old and spend some (alot of) time and effort getting a good result from my labours.

I am looking for some advice on bikes to work on that I should keep an eye out for, engine size, make/model, general price for age (where condidtion is applicable I am aware that this needs considering), if there are any well known breakers, sellers, meets or shows etc. I am based in Cardiff and will travel anywhere.