I have just read on the BBC News site that Spark Energy in Stirling, has ceased trading. You can read the official statement from Spark's Board on their own website here.
OVO Energy has put in a bid to take over the accounts of its 290,000 customers, obviously subject to the agreement of the Liquidator and the Energy Regulator.
Ofgem is well aware of the issues, and no customer should be cut off in the meantime. So please don't panic.
It will take a while to sort out those accounts which are in arrears or those where the contract-term is about to end.
If any Spark customers are reading this, and would like further advice, then you may post here by joining the OVO Forum. It is open to everyone, not just existing OVO customers. However, Spark Customer Service is still operating so any questions regarding Spark or your account should be directed there.
The Forum members are not professionals, nor employees of OVO. But we're a friendly bunch, and have a wealth of knowledge between us.