Thank you for the courteous follow up reply TBTF
I did a bit of research and went to the local driving school in Sri Racha.
They have a facility for preparing, arranging and providing all relevant paper work needed and stamped along with an arranged appointment at the Bang Lamung licence center.
In my case the following day.
Total cost for this brilliant service was 250 which I think was more than reasonable considering what you get for it.
I went to the DLA and went upstairs, turned left into the licence issuing dept. Counter 2 as instructed and was in and out in less than one hour.
Thanks to you and Johng I was encouraged to look outside the forum and it was certainly much appreciated.
250 at the driving center plus 555 at the local DLC = 805 which is so cheap for renewal fees, and the all important new five year licence.
Oh I forgot to add it cost me 300 baht for the required certified address letter from Siracha immigration..
It is valid for 60 days from issue but they take the original at the DLC so I would advise photo copying it as it could come I handy for future reference, especially if Immigration should they question where you live and possible non reporting it.
Best Regards and stay safe.