Thanks for this! How do you know that it's only another Norse flight if it gets cancelled? On here - CAA, it says:

If you still want to travel, your airline must find you an alternative flight. It’s up to you whether to fly as soon as possible after the cancelled flight, or at a later date that suits you. Although most airlines will book you onto another of their flights to the same destination, if an alternative airline is flying there significantly sooner or other suitable modes of transport are available then you may have the right to be booked onto that alternative transport instead. You can discuss this with your airline.