You'll be fine to a certain extent:

https://www.regjeringen.no/en/aktuel...ce2/id2724928/
https://www.gov.uk/foreign-travel-ad...y-requirements

'Non-residents are still able to transit via Norwegian airports as long as the final destination is not within Norway, but please check with your airline before departing.'

It may or may not be an issue, however carry on your onward ticket with you just to be safe on paper. The only thing that might make things difficult is if your onward travels is changed/ cancelled I suppose.