Air Conditioning Temperiture

I haven't tested mine with a thermometer yet, but it is pretty underwhelming compared to other cars I've had.

I would imagine the main stealer and Halfrauds do the same as Kwik Fit and have some strategically shaved and untrained ape hook it up to a machine. You're better off going to an independent specialist, you might pay a little bit more, but it's well worth it.

Find a reputable non franchised garage and get them to regas the air con. Make sure they know correct volume required to fill.

Came across this on the OBDeleven forum, if it helps

More cold in the cooler
With this mod 30% more cold in the climate control is achieved. (Thanks to Xagico)
1 - Module 08 - Electronic air conditioning / heating
2 - Extended Coding (Text)
3 - Temperature Adjustment
4 - Change value: Set colder func.refrig

Would presume however that this mod is for Climate Control fitted vehicles only.

There's always an assumption that regassing a/c will fix any issues, in reality there are numerous other reasons for reduced output.

Your vent output temps aren't bad IMO, 5-7 degrees is about right, that's usually measured a couple of inches into the vent, a/c max and at least 10 minutes with the engine at reasonable rpm (typically 1800 rpm).

Try the easy stuff first. Car Mode> a/c not set to Econ. Recirc fan On to get max cooling and Make sure your's is operating in High mode:
-Push Setup button, [lower half of the centre rotary a/c control, lower dash panel],
-on the RHS of the touch screen check the a/c mode icon (1 wiggly line = Low, 2 = Med etc)
-press to open options and select High.

This doesn't increase the max output, but should make the a/c try to reach the target temp more aggressively.
There's also a VCDS setting (Hot Countries)to increase performance.
HTH

Update...Any of the above any use?