Ockley
Redlands mountain bike trails at Leith Hill near Ockley in Surrey
Poole
Rempstone Round Trail is a good introduction to off-roading mountain biking for novices
Woodbridge
Rendlesham Forest, near Woodbridge in the East of England contains to family cycle mountain bike trails, and also a skills area to improve your riding skills.
Minsterley
The Eastridge evelation trail is for proficient mountain bikers with good off-road riding skills.
Richmond, Kingston
Richmond park, Kensington is mainly a national park with specific tracks for cyclists, which make for a really good xc training sesion.
Exeter
The Ridge Ride Trail at Haldon Forest, near Exeter is a 6 mile red graded mountain bike trail with an optional technical black technical to test your skills.
Rivington
Mountain Biking on Rivington Moor Using the bridleways around the Rivington area you can create a variety of loops and trails.
Rostrevor
The Black trail at Rostrevor shares the same beginning a the red trail but the forks off and takes you for the ride of your life through Rostrevor forest!