XS176 was part of the inventory of 1 SoTT at RAF Halton until the school was closed down in 1993. Many airframes were stored pending sale to the scrapman
XS186 (8404M) arrived at Metheringham on 5th March 2004. It had previously served with 1SoTT as instructional airframe. The T.4 is on loan from Paul Flynn and is currently under restoration to taxiable condition.