A filming report for the second half of Doctor Who series 6 seems to suggest that actor Ian McNiece was spotted on set today with soldiers. Ian McNiece played Winston Churchill in “Victory of the Daleks” and “The Pandorica Opens”. See the original filming report below:
The DW crew are busy filming at Cardiff City Hall today, with reports of soldiers with black shiny uniforms and berets on set (not UNIT). Another old 'friend' of the Doctor seems to be back too, Churchill.
At the moment this is not confirmed so take it with a pinch of salt. If he is back, why? Leave your theories in the comments below!