A person has been rushed to hospital in a serious condition after a crash on the M25. 

One van and two cars were involved, with one car striking the central reservation. 

All four lanes were closed between Junction 29 (Al27) and Junction 30 (A13), leading to Lakeside, but have reopened now. 

The crash occurred at roughly 7am this morning, and queues are stretching back to junction 28. 

More to follow.