Complaints about a constant humming noise driving people to distraction have fallen on deaf ears, according to those plagued by the sound.

People living at Six Hills House, off Stevenage’s Six Hills Way, began complaining about the noise nuisance to environmental health officers at Stevenage Borough Council back in June 2017 – and the issue has still not been resolved.

Officers investigating have described the continuous hum as sounding like a motor or fan running and being “very evident in bedrooms and living rooms” at Six Hills House, but have been unable to pinpoint where it is coming from.

Residents say the noise, which starts at about 7pm and continues throughout the entire night, is coming from Asda on Monkswood Way, but this has not been proven.

One resident who lives in the apartment complex, who did not want to be named, said: “We are woken regularly by a constant hum given off by large fans at Asda.

“Residents have filmed the noise at 2.40am to prove it is coming from there.”

Another resident said: “The noise seems to be a constant hum which is such a level that you can’t ignore it.

“I have resorted to playing white noise in my bedroom in order to drown out this constant and irritating noise so I can sleep.”

Councillor Jackie Hollywell, executive member for community at the borough council, said: “All complaints have been investigated and officers have visited at various times of the day and during the night.

“Officers have not been satisfied that the noise constitutes a statutory nuisance, and therefore the council will not be pursuing formal action.”

An Asda spokesman said: “We have fully complied with all council tests, which have confirmed our store is not the source of a noise issue.”

A spokesman for Metropolitan, the landlord of Six Hills House, said: “We have liaised with the local authority and building management company to try to find a resolution.

“Unfortunately, efforts to definitively establish the source of the noise have been inconclusive.

“We fully sympathise with the residents affected and we are currently looking into appointing a specialist consultant to establish the root of the problem, so it can be resolved as soon as possible.”