npower

If you've moved supplier or switched energy companies, you may have left credit behind. Energy companies keep records of their past customers, but to help speed up the claim process, you’ll need to have proof of:

Your identity (such as a driving licence or passport)
Address that you’re claiming for including the postcode if possible (an old bill)

To find out more about npower’s claim process, you can:
  Call:
Landlines: 0800 073 3000
Mobiles: 0330 100 3000

Write:
npower
PO Box 109
Peterlee
SR8 9DD

Or visit:
npower.com/fundsreunited