Peter Smythe:
You have 2 stalks on the left side of the steering column. One is indicators and the other is the dip switch. I’m embarrassed that, having owned a dozen or more of this type of vehicle, I’m struggling to recall where the main headlight switch is. But I’ll guess that it’s a relatively small round switch just above your right knee when you’re sat in the seat. This is the switch you need to find and you’ll be sorted.Good luck, Pete
Brill, thanks Pete, I did have a good nosey around and with the exception of the two stalks on the left, and the button mentioned in the pic above, i couldn’t see anything obvious. I’ll take a nosey tomorrow and post some pics if i’m still stuck 
Thanks again!
Ryan