Originally Posted by james_uk
i am assuming you used:
Model: GT-I9505 (4.2.2)
CSC: OXABMEA (MultiCSC - 8 codes)
am i right in assuming that if i update to that i wont have to wipe my phone as mentioned above?
You shouldn't have too, I just went from ME2 to MEA and never wiped, I've not run into any problems.
It's worth noting that if you install a rom not meant for your region OTA updates probably won't work and neither will updates via kies.
If you want OTA updates to work install ME2 and wait for Samsung to release a version of MEA in the UK, it depends how patient you are I guess.