Donald, I believe that Andy is correct in saying that it seems to be a dish favoured by Punjabi BIR's/TA's in Scotland.
Here are a few descriptions:
The New Serena, Dunfermline : Selected pieces of meat, poultry or king prawns treated tandoori style, cooked in a special curry sauce, cooked with onions, tomatoes, green peppers, touch of achari masala and almond flakes.
The Alishan Restaurant, Glasgow : Selected pieces of meat, poultry or king prawn treated Tandoori style. Cooked in special curry sauce with onions, tomatoes and green peppers, touch of achaari masala and almond flakes.
Do I detect a trend?
Tikka-Way, Kilmarnock : cooked in a special curry sauce with onions, mushrooms, peppers, a touch of mixed pickle and topped with almond flakes.
Mmmm! - don't like mushrooms in curry.
Gurkha's, Crieff :Selected pieces of meat treated tandoori style cooked in a special curry sauce, topped with onions, tomatoes, green peppers and a touch of Achari Massala.
And my own local TA,
India Palms, Dumfries : Cooked in special curry sauce, topped with onion, tomatoes, green peppers and touch of achari masala & almond flakes.
Now I have to say I have never found any evidence of the topping, particularly no almond flakes or green pepper, as per the attached pic from the Palms:

Anyway, have to go make Cottage Pie, so will post recipe later. I would really appreciate anyone trying it out and giving comments, positive or negative
