The Admiralty were flying the Fairey Gannet AEW.3 so the Air Ministry considered using one of the V Bombers as an airborne early warning system. The Vickers Valiant was chosen to be fitted with the fore and aft surveillance system. This would use the tried and tested AN/APS-20 radar to begin with and at a later date replaced with something better as the technology would improve.
SJMcColm Engineering Ltd was given the contract for twenty-one aircraft to be converted plus ten for training the flight crews,  ground maintenance and test examples.
The bomb aimers position was removed and space behind the cockpit freed up to allow two rows of three seats for the radar operators. The avionics and heat exchangers would take up the space in the bomb bay.
These allocated aircraft had their wings rebuilt using new materials all paid for by SJMcColm Engineering Ltd which had also been given the contract for the maintenance.
 The first AEW.3 made it's maiden flight in the summer of 1962,it was really a shake-down systems check with a full crew of eleven. The radar operators had already undertaken the rigorous escape from the aircraft training through the two hatches on either side of the fuselage. This flight lasted forty minutes which included a mock in-flight refuelling from a Vickers Valiant K.1.
 RAF Waddington would receive twelve aircraft forming A Flight, whereas B Flight at RAF Machrihanish received nine aircraft phased in 1963-1965.
Export orders to India and Australia used the surplus Valiants that had been retired from service all of which were rebuilt to the Valiant AEW.4 standard
The Valiant AEW..4s were deployed to Canada, Chile, Iceland and Norway. Eventually Gibraltar would have five aircraft which formed C Flight as B Flight was being reallocated from RAF Machrihanish.

The kit is the Airfix A11001A  Vickers Valiant B(PR)K.1. Apart from the issue with the bomb bay  doors being closed the parts seem to fit okay.

Superglue arrived this morning so the resin radomes are now in place held with masking tape until set.

Milliput filler applied.
Yes there is a 1/72 Lockheed Martin P-3 Orion with four Rolls-Royce Tyne engines in the background.