I used to go to Aintree lots when i lived up that way for single venue car rallys. Didn't know they did bikes there as well. Can't imagine its a challenging track for bikes but it must be quite quick. We built chicanes to make it a bit twistier. Most people don't realise that there used to be F1 car races held at Aintree although i think the current circuit is just the old club circuit as they used to call it.