Thanks for the replies.
Primarily I want to to train in Thai Boxing for fun and fitness and by your posts it looks like one class a week to start would be ok. Obviously if I enjoy it and get serious I can take it from there.
Systema is a millitary combat style developed from by the Russians. The class I go to is Systema Concepts which has its foundations based in systema but also includes core combatives.
Check out
Russian Martial Art. The System. and
Systema Concepts