Jeremy Clarkson didn't actually have Lightning F Mk 1a XM172 in his garden for very long.
An ex-Coltishall gate guardian, it then went to Booker; subsequently there were plans for it to be displayed on a roundabout in Farnborough, but those fell through.
The last I heard, it had been bought by a private owner, Neil Airey, and is now in Cumbria having been reconstructed. Neil hopes to restore the aircraft to museum standard in the future, it seems.