Mounjaro on warfarin

Hi all, im hoping someone can help or have been in the position with success. My father is wanting to go on mounjaro after seeing the results myself & my partner have had. But there is a series of hurdles we are struggling to overcome. First being we are in Northern Ireland so our only option is private as we can not get any help through our GPs The second being he has a list of ailments, the ones that seem to cause a problem are that he has type 2 diabetes, heart failure with shortness of breath & he is on warfarin. Hes has spoke to his GP about this & they think mounjaro would be a good idea but they can't prescribe it here. We have looked at medexpress & putting in his details they cant give him. Is there anywhere else we can try that will give him a prescription? Can we just use med express but say no to the questions asked?

It just seems like a such a silly thing that is setting this back but i know that they are just covering themselves, the gp has already said he will have to monitor the warfarin closer but it is no different if he is on a course of antibiotics.

At this point any advice is good advice because it is a brick wall we cant get past. Thanks!