It's a while since I flew in that part of the world, but it should be no problem. In my experience Newcastle and Teesside (or whatever they are called now) are very helpful, I think the AIAA would be cold at the weekend, but check the AIP. Unfortunately most of the excellent Mil LARS units are cold at the weekend so IMHO it is easier during the week than at weekends. Once again check before you go, but I have happy memories of trundling up and down that part of the world being handed over from LARS to LARS having passed my message only the once. It might well be worth avoiding Stanstead altogether an enjoy a scenic route via the coast.