What should I do if I think I own one?
Whirlpool has set up a model checker online, although this itself appears to have crashed. Owners of Hotpoint and Indesit washing machines bought since October 2014 will need to enter the model and serial number of their appliance - found inside the door or on the back - to see if it is one of those affected.
There is also a free helpline, open every day, available on 0800 316 1442, but this too was initially telling callers it was "unobtainable".
If affected, to eliminate any risk, the appliance should be unplugged and not used until it repaired in their home by a trained engineer, Whirlpool said. As an alternative, those affected will also be offered a replacement with a safe model.
Owners can check and register for a repair or replacement now. Vulnerable customers will be prioritised, but for others it may be organised on a first come, first served basis.