According to Wiki, there was a Wellington version that performed an AWACS function...
"In late 1944, a radar-equipped Wellington was modified for use by the RAF's Fighter Interception Unit as what would now be described as an Airborne Early Warning and Control aircraft.[5] It operated at an altitude of some 4,000 ft (1,219 m) over the North Sea to control de Havilland Mosquito fighters intercepting Heinkel He 111 bombers flying from Dutch airbases and carrying out airborne launches of the V-1 flying bomb."