I was in the same boat needing my aviation fix in the car etc and have found quite a few - not necessarily focused on learning to fly but addictive none the less and informative! My top picks are:
Airline Pilot Guy - American based but thoroughly entertaining with a great community of APG’ers!
Plane Talking UK - general chat and news about commercial air travel but also includes some aspects of GA.
Aviation News Talk Poscast - Max Treacott is a US based CFI, talks about the news and also covers some learning aspects to flying.
Unfortunately I had a few us based podcasts about learning to fly but none from the UK.
Enjoy