There is some useful info on the various License types and the various paths into the Industry at:
Aircraft Engineering introductory year, foundation degree FdEng and top-up year BSc(Hons) - Course Information - Undergraduate Students - Kingston University London
The Military route is not mentioned, but echoing what others have said, (I'm ex RAF myself!) the merits of going this way these days are limited. There are now no exemptions from the EASA exams for military training and the quality of Forces training is not what it once was.
As I've mentioned to other youngsters, it’s a demanding, rewarding and varied career (but don't expect it to be easy or a path to rapid riches!)