The cyclo-cross season run from September through to the end of January and is a great way of keeping fit and having fun over the winter months.
The local league is the West Midlands Cyclo-Cross League (WMCCL) – see link in Organisations on righthand side

If you are planning to do several its worth registering for the series as that way you score points. Alternatively you can yurn up on the day and enter on the line. Mountain bikes are also allowed in these races.
Alternatively/additionally there is the National Trophy Series and the National Championships. These races are held in various parts of the UK and allow you to compete with the best nationally. All races need to be entered in advance