I believe john Yates did an ascent at an early age in the 70's ( poss while in 6th form at school??? but I may be bulls****ing) very talented rock climber with many first ascents especially in Staffordshire , also qualified guide.
In reply to Bob: I always thought tom ballard went out to become youngest brit to climb eiger nf at 17yrs old,his mum alison hargreaves was the first british woman to solo the north face indeed while she was 3 months pregnant with tom,a very remarkable lady.