Johnuk,
Sorry for the delayed response.
Your Hyperopia was higher than normaly considered for Lasik. This may be of concern to the CAA.
There is no Myopic limit for Class 2 renewal but the +5.00 limit for Hyperopia remains, so you shouldn't even have a Class 2. I'd take comfort in this.
The pre-LASIK-prescription limits apply to initial medical exams; disregard your existing Class 2.
My suggestion would be to write to the CAA and ask them.
In my similar case, got a reply within 8 weeks. Your Class 2 and PPL are in your favour. Do lots of research - especially EASA, JAR & the deviation route.
Good Luck