For the UK it used to be that you had to have ME IR but now it has changed. Bristow I’m sure about but I think the others too are ok with SE IR. In Norway SE IR is fine. Places to get said rating - Proflight in Norrtälje/Sweden or Billunds in Denmark, both on longrangers.
Main bases in Norway are Stavanger and Bergen with smaller bases in Kristiansund, Florø, Brønnøysund, Hammerfest.
They are hiring in Aberdeen at the moment on the UK side. Yes they are hiring people without type ratings.
Not hiring in Norway right now that I know of, but same thing there - rating not required or expected.
Roster is 5-2-5-9, 7-7 or 14-14 depending on where, when, who.