Ok, i took the car to an engineer and he had a look at the column. There are two ujs in the cockpit on the Williams. One up towards the steering wheel and one at the floor. The higher one near the wheel is fine. The lower one is the one with play. On the lower uj there is a bracket that comes up and fits over the cylinder of the column. To take up slackness there is a rubber that fits into this gap, and this has worn and split. Now it seems a waste of 270 quid to replace a perfectly good column if all that has happened is that some rubber has worn away. I can see why welding would work. Does anyone think that you could simply replace the rubber with some other substance to take up the slack? I am going to have a good look later and see if i can do something with it. Anyone else tried any DIY?