Griffiths goes through safely, with a long, long gap (46 seconds) to Bill Swallow now in 2nd place, after McGahan's retirement at Quarry Bends.

There is now an even longer time gap to the next man through Doug Snow with Bob Price and Mark Linton all together. Next one through is John Loder

Placings on timing

Griffiths
Swallow
Linton
Snow
Price
Goodall

Roy Richardson leads the Lightweight now by 98 seconds over Barry Wood, then Ewan Hamilton and Kevin Stroud and Steve Smith and Decca Kelly.