At the Britcar 24 event at Silverstone 19-21 September, there will be some support racing featuring our favourite marque in the Porsche Club Championship and Porsche Open series.
From what I can work out, practise will be on Friday and racing on Saturday before the 24 hour race kicks off (no doubt featuring even more Porsches, but no entry from Top Gear this year. I guess no-one wants to insure Hammond anymore).
I haven't found a schedule yet. If anyone has one, please post it here.
Here's the link to Silverstone:
http://www.silverstone.co.uk/php/rm_britCar.html