A nice photo to of the SWIFT XF114 VA.9597 to be found at this link:
AirlineFan Royal Air Force Swift F7 XF114 VA.9597 Photo
Another photo of the aircraft to be found at this link:
Photos: Supermarine Swift F7 Aircraft Pictures | !!!!!!!!!!!!!!
Can anyone shed some more light on its use in wet friction testing in the 60's?