Due to the Press Release issued by Youthstream on the 11th October announcing a change to the FIM World Championship for the Spanish GP on the 24/25 March.
ACU Events have therefore decided to avoid clashing with the Grand Prix and swap the date of the second round to the 18th March.
The revised Provisional Calendar for the 2018 Maxxis ACU British Motocross Championship is as follows
Maxxis ACU British Motocross Championship
Provisional 2018 Calendar
| Round 1 | 11th March | TBA |
| Round 2 | 18th March | TBA |
| Round 3 | 22nd April | TBA |
| Round 4 | 6th May | TBA |
| Round 5 | 24th June | TBA |
| Round 6 | 29th July | TBA |
| Round 7 | 26th August | TBA |
| Round 8 | 16th September | TBA |
| Reserve Date | 14th October |