Turns out it a BAE Nimrod or DeHavilland Control System Actuator:http://www.ebay.co.uk/itm/Rotax-C12201-Rotary-Actuator-Hawker-Siddley-Nimrod-De-Havilland-Comet-4-Controls-/261307700832?pt=UK_CPV_Aviation_SM&hash=item3cd7271660
BAE Nimrod or DeHavilland Control System Actuator:http://www.ebay.co.uk/itm/Rotax-C12201-Rotary-Actuator-Hawker-Siddley-Nimrod-De-Havilland-Comet-4-Controls-/261307700832?pt=UK_CPV_Aviation_SM&hash=item3cd7271660