Okay I've got two jerseys that fit, a Torm T17 short sleeve/full length zip in XL, and a Santini Tono Flusso short sleeve/full length zip in XXXL. I'm assuming that all jerseys in those sizes from those brands would also fit me, although Torm do say that their half length zip jerseys fit more snugly so I would probably need an XXL in those. I tried an L but it was just too snug for me and a tiny bit short, might be fine for someone else though.
I'm really happy with the Santini as this all started with wanting a 'race' jersey, which it certainly is, so much so that on a cold day my nipples will help cut a path through the air. The Torm is a thicker jersey, so maybe not great for hot days (i.e. much above 20 degrees), nice on warm days and cool mornings, and they had sold out of the blues in my size so I ended up with a yellow jersey with reflective stripe, not quite what I wanted but it's good for visibility. I was disappointed by all the autumnal colours they had (plums, burgundies, navies, greys and
blacks etc) and am I right in thinking that they are heavily influenced by Rapha? That would explain the colours and the horizontal stripes.
For reference in case it helps, my chest is 105cm/42", waist is 92cm/36", and from my waist up to the middle of my collar bone (the little V at the front of your neck) is 53cm/20.5".
Notable mention to the Endura Pro SL II short sleeve in XXL - this was a really nice jersey and fitted well, but just too short. Their custom jerseys can be ordered in a long variant which gives an extra 5cm length which would have been perfect, but minimum order of 5 @ £72, so not feasible for me. (interestingly, the Torm jersey was almost exactly 5cm longer than the Endura)
Everything else was too short, and sometimes also too tight as well although if you can put up with a very clingy fit on the bike you might be able to balance that with looking like a matador from the future when you're off the bike. These were:
* Funkier Isparo Elite Short Sleeve XXL
* Northwave Extreme 4 Short Sleeve XXXL
* Santini Karma Luce Short Sleeve XL
* Sportful Bodyfit Team 2.0 XXXL
* A couple of Mountain Warehouse short sleeve jerseys - these weren't fitted at all, a size L was still hanging off me, they're cheap but basically glorified t-shirts with a neck zip and pockets on the back. If you're just looking for a basic jersey to ride around in they will probably do, but they're not at all sexy.
By the way, all of the jerseys had a soft round lump at the front, just above the hemline, which no amount of ironing could remove. Just something to watch out for if you're shopping for yourself.