So this is odd...
I put my car onto charge at 12:00 pm and it was 92%, charging at 6kwh. Had a look at 4:30pm and it had finished equalising. I unlocked the car and then it started equalising again so I left it a bit.
Had a message on my Ohme app that the charge had finished, so I checked the car again and the MG light was off. I unplugged, then switched the car on and it showed that I had 444v again, but with less mileage than when it was fully charged this morning (full charge this morning was 147 miles, full charge this evening showing as 146 miles - both on Normal mode, everything switched off).