Thought I'd just update this thread.
A new intermediate drive shaft was diagnosed and fitted at Easter. Steering all sharpened up and now no play in the wheel.
A few weeks ago it started creaking and groaning. Only a little at first, but now all the time.
Popped it into the garage on Tuesday for them to check it out. Sure enough, the part they replaced last time was faulty too. Part ordered and fitted next day, (last time it took 6 weeks to order it).
Got a call to say "we've found another problem". Creaking still there, it's now got to have a new steering rack.
With only 11k on the clock, I wasn't really expecting these kind of problems.