[backseateducation]

Sorry this has taken so long.
I've done some internet research and discovered that the Tojeiro was indeed a Bristol engined one.
https://farm4.staticflickr.com/3796/...7f89e6fa_c.jpg
Silverstone Future Classics event by mattsmondeo, on Flickr

Here's the Frazer-Nash....
https://farm4.staticflickr.com/3781/...4e7260f5_c.jpg
Silverstone Future Classics event by mattsmondeo, on Flickr