Thanks, Mike. Despite the taunts, I appreciate both your offers: a new wheel is £274 (for one! Readily available, though). In the end I got a second-hand wheel (curbed, but not out of place with the others ) from a Rover breaker (Breakerlink.com) for £184 including almost-new Continental, VAT and delivery. As one of my tyres was also condemned because of a gouge out of the wall (), and as Bath MOT Centre only charged me £20 for a retest and no labour; I guess I should be stoked... bloody potholes though!