Do not under any circumstances
use the type of sausage that is shown in the article. That looks like a frankfurter or some other thing that has been processed to hell and back.
A proper sausage only. IMHO, this should be either Cumberland or Lincolnshire types.
Oh, and FU the EU for not understanding that a British Sausage is a thing of beauty and to stop them being sent to Northern Ireland is tantamount to war being declared. Ban that german rubbish in return.
And any sausage that has rusk in it is not allowed. Minimum 90% meat only.