The real W4041 is on display at the Science Museum, London. On 15 May 1941, the Gloster E.28/39 W4041/G first flew from RAF Cranwell, piloted by Philip E. G. ‘Jerry’ Sayer. In front is a RB.23 Welland, the first British production jet engine.
The original E28/39 is in the Science Museum. This replica is in the Jet Age Museum at Staverton. The '/G' at the serial is not a code, but an indication this aircraft had to be guarded at all times.