Maydup, as I understand it, the plan is that everyone not in a care home at least in the current cohorts ie up to over 50's will get both invites (gp and mega hub) and its likely to be the book it yourself national scheme one that you get first. Pro with national scheme seems to be more choice of appomtment and location, cons that you may have to travel further and there is no conversation with a real person. Pro with the GP scheme is that it might be closer to you and maybe easier diabled access, con is that you get less choice. I don't have "special" knowledge, just know quite a few people who have been or who have relis who have been. Once you have been done, wherever you went will tell the other one. You will go back to the same place for your second jab.