How to get hot water flowing again

Hi Gareth, this can be a hard question to answer as we dont quite know the set up and age of your tank. presumably the tank is not filling up as there will be a valve on your cold supply before the tank. this may be turned off. all you would have to do is reopen the valve and the tank should fill up. have a look for a brass valve with maybe a red handle. can always send us a photo and we can advise better. Thanks Renew & Restore Bristol

Possibly the gate valve you have turned off hasn't opened correctly or needs replacing, gate valves can be temperamental if old. Another possibility is a air lock.

If its a gate valve(red handle) thats been turned off it has possibly seized as this is very common. Failing that, it could be an issue with your fill valve.