Cars have been left 'scattered' across the M40 this evening following a crash involving at least six vehicles. 

The M40 London-bound is closed between junction 5 for Stokenchurch and junction 3 for Loudwater following the crash, which happened just before junction 3. 

The closure has been extended back to junction 5 as the exit slip road at junction 4 (Handy Cross) is already closed for weekend roadworks.

Diversion: Following the 'solid square' symbol from M40 junction 5: take the A40, A4010 and A404, then pick up the A404 from junction 4, joining the A40 and rejoining the M40 at junction 3.