Many thanks to Dave T for his tip on getting the tow-plane in the picture (hold down the control key and then + or - to zoom in or out from the locked spot view)
Glider is the Slingsby T21 from here at Simviation
Tiger Moth from Ant's Aeroplanes also from here
Scenery by ORBX and Sky from REX
Effects are just playing around with the presets in Microsoft Digital Image Creator
Cheers
Rich