I can fully recommend the Land Rover experience factory guided tour up at Halewood, I paid for a one-to-one personal guided timed tour to actually see my very vehicle on the production line, the visit lasted from 11:00 until around 4:30 starting at the press shop right through to rolling of the production line, full production takes about 3 days, but you will get to see it for about an hour, usually at trim.
£299 quid for the privilege mind you, but a chance of a life time, JLR only started this tour this year, not really being pushed by the dealers! only at Halewood only for now. You get a few goodies, coffee an biscuits on arrival, buffet lunch, which was very good and afternoon tea, and they will take pictures of you and your car line side, it really was an experience not to be missed. I will post some pictures soon.