Wouldn't say 99%, my local makes a chilli paste from green chillies, Ashoka on here does likewise & think the stuff published under Glasgow recipes does also. No mix powders in a 20 second cook either.
I like the flavour of mdh Kashmiri Mirch for cooking other dishes, but it's not a flavour I've ever come across in bir up here.
Some of the places trying to set themselves apart may well use these ingredients. Shish Mahal in Glasgow use Bengali prawns, when they could use Scottish.
ELW