Gas engineers are urging homeowners in Oundle to make sure they are in today as they attempt to restore supplies to the final few houses in the town.
The area has been cut off since Thursday morning when a fault developed with the equipment regulating the pressure.
But by the end of yesterday (Saturday), National Grid had got round to 96% of properties in the town and switched the gas back on for 81%.
This morning, 40 engineers are visiting the final few homes and returning to those they could not gain access to yesterday.
Figures obtained by ITV Anglia show hundreds of gas appliances have been worked on by unregistered engineers here in the East of England.
Nearly 250 jobs were carried out by unqualified engineers over the past two and a half years.
Nearly one in five of those were so dangerous the appliances had to be disconnected immediately.
Centrica, the parent company of British Gas, has been given the go ahead to develop a gas field off the North Norfolk coast