Changing Schools
Hi there, I know your problem well. I work at a school in Southern Spain and I will not mention the name as I don't want to advertise.
Loads of people are in the same boat as you and I think 172driver may be right. I instructed in the UK until January 2008 and I was teaching some people that had started their PPL as far back as 2003. That's an extreme case though, but many of my students have at least done a year before they come to me.
If you can get the time off work have a think about it but make sure that you can get a UK instructor, sweeping statement I know but in the USA they mainly use FAA instructors and from what I've seen and by going the FAA route 1st myself, the level of instruction is just not at the same level as the UK.
Anyway, whatever you decide, I wish you the best of luck and hope that you achieve your goal soon!!