I thought that myself, I can hack once a month. Though I don't have a car, so the train might be a bit of a joke! My home town, where I'll be for a sizeable (5 month) portion of the year is a lot closer to both Bedfordshire and Lincoln, with much more access by rail. Is every weekend essential?
I have a lot of friends up and down the country at Universities, so weekends might be a case of getting the train to one of them on the Sunday (I don't know what time training would finish) and getting back to Uni as early as possible on Monday.
I'd really like to join the RAuxAF due to family history of RAF service, certainly far prefer it over the other reserve options if at all possible.
The Intelligence squadrons seem to recruit nationally, does this mean that rail travel is covered by the units? I'd have to reconsider if not. I wouldn't mind at all not really making money from doing it, but I don't think I can afford to be out of pocket.