One of Norfolk's highest profile and longest established sport events is set to attract motorcycle race fans from around the country this weekend.

They will be heading for Lyng, near Dereham, when round two of the Maxxis British Motocross Championships makes its annual stop at the demanding Cadders Hill venue.

And with all the British-based manufacturers' teams entered in both the MX1 and MX2 classes, it promises to be a feast of high speed, top quality racing.

Also on the programme is the opening round of the MXY2 class, which features the best youth riders from around these shores.

The organising Norwich Viking MCC have been hard at work over the winter months making alterations to their track, which is recognised as one of the most challenging in the country.

They have changed the entry to the famous bomb hole section of the course, and reprofiled the finish area, which should ensure some last-gasp challenges at the chequered flag.

Clerk of the course, Andrew Hay, said: 'We know the riders like Lyng, but we felt it was time to make some alterations to provide some new areas of interest for both the competitors and spectators.

'The course is in tip-top condition and I always look forward to this event when we get to see some of the world's best riders on some of the best machinery going handlebar to handlebar with no quarter asked or given.'

Defending MX1 champion Shaun Simpson (Hitachi Construction Machines KTM) arrives at Cadders Hill, where he took the overall victory last year, at the head of the fledgling standings after winning both races at the opening round just three weeks ago.

Estonian Tanel Leok (LPE Kawasaki) is second, with former British champion Brad Anderson (MBO Power Yamaha) third.

Local fans will want to keep an eye out for Bury St Edmunds' Lewis Tombs, Norwich's Aiden Wigger and Luke Parker, as well as Wisbech's Luke Benstead, who got his season off to a great start with victory at a regional event at Woodbridge last weekend.

Admission is £20, with children five to 15 £5, concessions £15 and a family ticket of two adults and two children £45.