I got myself a towbar and adult bike rack from Autowbars (My link) in Bradford and can definately recommend the guys there. I got the car booked in and dropped it off with them on the day. I then went straight over the road to the lovely cafe and had some breakfast and several cups of coffee to pass the time. Then 2 hours later the towbar was on, the bike rack fitted, and the number board, number plate, and strappings, all ready. They gave me a run down on how to fit it all together and also some tips on strapping the bike down.
Then yesterday was the test day for using the bike on it and I took the bike out to Swaine Woods in Horsforth for my first ever time riding a trials bike. I lifted the front wheel up and in, then grabbed the rear swingarm and lifted the backend up. Got the strappings and tried to remember how the guy at autowbar's had suggested to strap it up, then tied up the loose ends of the straps and this was the result.
It got me the 20 miles or so to Swaine Woods without a problem and the same coming back. It all went really well. The bike was still securely strapped down at the end of each trip and I was very happy with it.