Paul, I think the reason you are getting no replies is that like others I don't think I have ever seen a picture of an EOD 109 in NI service, I'm afraid.
There would no Union Flag stickers as the original requirement for that was NATO command with two or more countries, so everybody knew which army was which. But there wouldn't be a soul over there who would be unaware which army was in support of the civil power! Possibly an ex-BAOR vehicle might still have them on if it had just arrived, but really should be painted out.
I suppose you're itching to paint red wings on it & pictures of Felix on the side? So you'll probably have to just keep it in a normal restrained run of the mill everyday paint job, I'm afraid. Not all Rovers could be EOD, MP etc there's no shame in ordinary if that was the vehicle's history. :-D