Thanks Steve. Sadly dad is no longer with us so I can't elicit any more information. I was always under the impression that it was one of ours. I remember him saying that they were only cleared to land on certain airfields and Sylt wasn't one of them.
Re the T4, that is at Coventry with the Classic Flight and I believe will not fly again.
Work on the PR9 at Kemble is progressing well.
Somewhere in the loft is an air to air photo of an 88Sqdn Canberra. If I can find it a copy will get to you.