EW car truck & bus:
wow i’m astonished, my 1st pay packet as an apprentice mechanic was £12 something or other, proudly have it upstairs … oh and incidentally that was june 1976
E.W.
Ten years before you, July 66 and an apprentice HGV mechanic at a main dealer, my wage was £4 6s 8d aged 15. It rose by £1 per week each year until I was 21. When I moved north in 1975 my hourly pay dropped from 97 pence to 50 pence, the north/south divide I guess! 
Pete.