bit of useless information - Marlboro had a 'Zapper' works team that based in the West Midlands NBMXA. Steve Bigland rode for them before Rebel, I was mates with their rider in my age group (13's) Dean White who was a top rider at the time despite being a bit taller than Spen like me and smoking fags between motos!
Thinking about we had all the POS bike teams in WM NBMXA regionals- landar, BH, Halfords, Marlboro, Puch