You're considered time served and experienced when you renew your ccm1 for the second time. By then there isn't much you shouldn't know or not have worked on.
As an ex BG minion I would say you're better off staying and making the most of it. You can make all you're mistakes there and learn from the wealth of knowledge available. Despite the shoddy installs and the selling culture there are some truly great engineers there! Stay away from the unionites they won't teach you anything get cosy with one of the LD guys they tend to pick up all the crap that no one else can do! Learn ask questions and put yourself forward!
Consentrate on first time fix rather then throwing parts at a boiler till it works learn about components and the resistances this will benefit you more then up and leaving! Also if you leave before 3 years there is a financial penalty unless you are the over 21 category that had to contribute to your learning.
read the TB's that come in and study adapt. Be ware though adapt often points to the wrong component but it gets you used to logical and processed fault finding.
also if you are thinking of leaving to enhance your salary don't you won't be impressed!
Cover GA, work radicals on your rest days, and do the holiday buy back. Take the odd bank holiday on. And Christmas Day is worth about £600 if you play it right you'll be home by midday that lot will put you just shy of 70k depending on the amount of ga you do
