Broring question about Rating re validation / renewal

[Skyseeker]

Hi everyone

Hopefully someone can confirm or correct my conclusions drawn from Lasors.

I have a JAR PPL(A) and an expired SEP rating. This expired more than 5 years ago. So, in order to get SEP rating back, i think i have to do the following:

1. Renew my medical
2. Undergo flight training at my discretion
3. Complete a skills test with an Examiner ( is this a full PPL skills test that I would have taken to get my licence?)
4. Send the docs off to CAA (with a cheque!) for them to endorse it onto my licence

Then to keep it current I need to fly 12 hours every year including 6 hours as pilot in command with 12 T/O's and landings and a training flight of at least 1 hour with an FI?

I am also looking at doing a TMG rating. When that is passed, does that automatically renew my SEP rating or do I need to do both separately?

Sorry for all the questions, but I have been away from flying for so long that the memory is a little foggy!!

Thanks in advance.

SS