Night rating
 

Are there any flying schools in the UK that run the night rating throughout the year? Ideally at an airport that doesn't charge an extortionate movement fee after a certain time.

Aeros Cardiff

https://www.aeros.co.uk/training-overview/imc-training/

https://www.aeros.co.uk/locations/cardiff/

if you search the CAA website i believe there is still a list with all the flight schools and the types of training they provide. Night should be listed too, probably combining that with a bit of googling and advice from other people will get you what you need.

Thanks, GBEBZ!