Cheers everyone - I think I'll see if I can get me a clarity card for a start and maybe one of teh revolut cards to see how it works.
Barclaycard Platinum Travel card is fee and interest free if you pay it off each month but that ends in 2022. That'd work for me but don't think they'll accept me based on income of less than 20k a year, otherwise I'd say it's perfect.