Bible-based UK church recommendations for 30s

Please could I have your recommendations for bible-based/sound churches in the UK that have a good amount of people in the 30s.

Requirements: – Male leader – Adult baptism – Bible-based teaching

Potential denominations: – non-denominational – reformed – calvinist – baptist – evangelical

What I would not like: – Jehovah’s witness etc. – charismatic etc. – Catholic – Anglican – Church of England – methodist

All UK areas welcome, but preferably London.

I really appreciate your help!