Unlikely, Monzo Plus is not available for Channel Islands even if you have an existing account which is very disappointing as I quite like some of the new features.
The process for getting a banking license and regulated in the Islands is quite onerous and and probably not worth their time for the relatively small number of potential customers they will gain.
I have been using Monzo for years (and i live in Jersey) I have found out that i am unable to upgrade to Plus or Premium which is a little upsetting. But I’m now worried about the future of my account… I am just about to move my direct debits over etc, but am a little reluctant if i am going to closed down, or shut off shortly