(writing in progress - bear with me)
Greggs: Vegan Sausage Rolls - ⭐⭐⭐⭐⭐
4pk (420g) / £2.50
I believe these may be exclusive to Iceland Frozen Foods (and other Iceland-linked shops). My Dad bought and cooked these for me when I visited for a family birthday and they were brilliant. They have to be baked at home and I'd say the frozen ones came out even nicer than the famous in-store version. Lovely flaky pastry and a sausagey filling with a great bite to it.
Quorn: Vegetarian Sausage Rolls - ⭐⭐⭐⭐☆ (not vegan)
3pk / £2.75
I like these - the pastry is nice and the sausage part has a really good bite to it. Nice and firm. Sadly these are vegetarian, but I do believe Quorn now have a vegan version which I will try when I find them.
Pukka: Vegan Sausage Roll - ⭐⭐⭐⭐☆
Fairly nice flavour. Possibly slightly peppery, which I like. Tried hot and cold. Pretty good.
Linda McCartney's: Vegetarian Mini Pulled Pork Rolls - ⭐⭐⭐⭐☆
Chilled / 168g
Like almost every Linda McCartney product, they are sold as vegetarian but are in fact fully vegan. Made with textured soya and wheat protein, these are mini bite-sized sausage-style rolls. The pulled pork filling is quite nice. They may have an extremely mild hint of an Asian-style spiced flavour, but I couldn't see that mentioned on the packaging. I ate them cold and they were nice. I imagine they'd be just as good reheated and that would also give the pastry more of a flaky texture. Thumbs up.
Marks and Spencer
Frys (pork-style and chicken-style)
Sainsbury's Plant Pioneers (there are four versions available from what I can see)
Below are the sausage rolls that do not try to imitate 'sausage'.
Asda: Plant Based 2 Cauliflower Biryani Rolls - ⭐⭐⭐⭐☆
2pk / 99p
These rolls are not technically 'sausage' rolls as the filling is a combination of cauliflower, rive, apricots and mango. They have a very subtle curry-like flavour and a turmeric and fennel crumb on the top. They can be eaten hot or cold, but I warmed these through in a pan before eating. These were nice and made a change from the vegan 'meat' style filling that I would usually buy. I'd get them again.
Vemondo: Vegan BBQ Jackfruit Rolls - ⭐⭐⭐☆☆
These are from Lidl. Usually jackfruit is used as a meat replacement as the texture has that meat-like chew to it. In this case, the quantity of jackfruit seems quite low (18%) so they don't feel like they are trying to imitate meat. The pastry was fine. The filling had a reasonably good flavour, but it was on the mushy side. Overall these were nice enough but I won't be rushing to buy them again.