Right, just been for a moist wander to the tyre shop, rims ARE stamped ANR1534 and TSD turned up the frankly brilliant weapons-grade-anoraking thread "Fvckwit's Cool fizzin' Rivet countin', Monumentally Bell-ended, Anorakin' Buyers Guide to Super-Hereto Deep-Dish, Forward Control, One Ton, 130, Rims & Wheels" which shows detail of the rim form, which I can confirm is what I've got (screenshot showing example):