Surrey are poised to strengthen their position at the top of the LV= Insurance County Championship after taking 17 Warwickshire wickets on an extraordinary second day at the Kia Oval.

The injury-hit Bears were bowled out for 161 in reply to Surrey’s 396 by an unrelenting seam attack – all of whom have taken their wickets at an average of under 25 this season – led by Kemar Roach (4 for 64) and Dan Worrall (3 for 34).

It scarcely got any better for Warwickshire second time around as they lurched to 35 for 5. At that stage Warwickshire were heading for a two-day defeat but Dan Mousley’s unbeaten 60 helped them avoid that ignominy and they closed on 126 for 7, still trailing by 109.