TJ138 was part of a batch of 70 Mosquito B.35's ordered in 1944 but not delivered till the latter half of 1945 when it was put in to storage with 27 MU at RAF Shawbury. In 1950 it was put in to service with 98 Squadron at Celle in Germany and later Fassberg. In 1951 it returned to storage at 38 MU Landlow to make way for the Vampire FB.5 at 98 Squadron. In 1953 it became one of 205 B.35's converted to TT.35 standard to be used as target tugs, initially at Llanbedr in 1954 and later at Woodvale from 1958. In 1959 it was put in to storage at 27 MU Shawbury. Declared to be of historical significance it was moved to 71 MU Bicester in 1959 and moved on to RAF Thorney Island in 1960. By 1967 it was at RAF Colerne where it was refurbished in 1970. With the closure of Colerne in 1975 it was moved first to RAF Finningley and then to RAF Swinderby before arriving at RAF St Athan in 1986. It was repainted in the colours of 98 Squadron in 1991 to join the RAFM Hendon in 1992.