Since we are talking about British and non-British things, can I ask if you have had a vegetarian "sausage" made of zucchini, carrots and potatoes and shaped like a link sausage? Texture and taste is nothing like sausage but they are delicious.
I had them at a few Hotels in the UK and also at an airport Lounge at Heathrow and I really like them and would love to figure out what they are and maybe then I could figure out how to get some.
I've done internet searches but no luck.
Could they be something like a vegetable croquette? Like this? Or were they actually sold as a sausage?
https://www.bbc.co.uk/food/recipes/vegetable_croquettes_01978
These look great! I will make them. I actually think they will be very similar.