I've done a whole load of work on the brat recently, and photographed it all on my proper camera, but unfortunately my laptop is broken, so can't upload any. I borrowed Dad's workshop, while he was away for a couple of days, to weld up a 'new' rear section today, using recycled parts from the scrap-bin at the local classic car garage. I think the silencers were from a twin pipe E-type Jag. Decided to use them both inline, as I didn't want want it to be too loud. Seems to work really nicely, and the exhaust tone Is nice and crisp, without rasping or being deafening. It seems comparatively loudest at lower revs, and similarly quiet at driving-speed to the original, massive/ heavy silencer, which used to rasp and sound a bit hollow.
I've already welded up the front and mid section, removed the forward silencer, and cut out rotten flange joints and some other sections that were blowing a bit, and replaced it with straight-pipe, so it is now a single section. All finished with several coats of black stove paint, and a chrome tip.
Edit: photos added: Finished product, and original silencer, which was butchered.