VIDEO: Flies infest top floors of iconic Sheffield tower block where residents cannot open windows for weeks

The top floor of an iconic Sheffield tower block is infested with flies - and one resident says he has been complaining about it for 17 years.

Videos show how the highest floors of the Robertshaw building in Netherthorpe are crawling with cluster flies that fill the air.

The top floors of the Robertshaw building, one of Sheffield iconic Netherthorpe flat blocks, are infested with cluster flies that swarm for weeks twice a year.placeholder image
The top floors of the Robertshaw building, one of Sheffield iconic Netherthorpe flat blocks, are infested with cluster flies that swarm for weeks twice a year. | Peter McLoughlin

The docile but swarming breed of fly gather in their thousands in autumn as they find warm, sheltered places to lay their eggs - such as in the gaps of cladding in apartment towers.

But one Robertshaw resident, Peter McLoughlin - a former Sheffield cabinet member for housing - says he has now been putting up with the yearly infestations for nearly two decades and demands action from the council.

A councillor spokesperson said a second survey to address the issue was commissioned this week, and that common methods of exterminating the flies poses a risk to other wildlife.

“I’m fed up of it, to be honest,” Peter, 81, told The Star. “It’s become unbearable.

“You cannot open your windows at all or they will get inside, and with no fresh air you end up living in a stuff flat where any mistake means flies getting into your home and into your food.

“I cannot use fly spray because of a medical condition. We left a window open by mistake last night and had to spend two hours squashing them with a damp cloth.

“It cannot carry on like this.”

Peter McLoughlin, a former cabinet member for housing at Sheffield City Council, says he has been complaining about the fly swarms for years.placeholder image
Peter McLoughlin, a former cabinet member for housing at Sheffield City Council, says he has been complaining about the fly swarms for years. | Marie Caley/Sheffield Star

Peter moved into Robertshaw in 1988 and says in that time he has been “forced” to become an expert on the seasonal pest.

He says the cluster fly infestations began in the late 1990s when the block’s cladding was refurbished by the North West Inner City Action Plan (NWICAP) Single Regeneration Budget1 (SRB).

However, the new aluminium cladding has gaps in many places - a perfect place for the swarming pest to shelter en masse in autumn after migrating into Sheffield from the Peak District.

Then, when the weather turns colder, they burrow into gaps and lay their eggs, which hatch in spring.

The cluster flies swarm around the building after migrating to Sheffield from the Peak District, before nesting in the gaps in the cladding during colder weather and laying their eggs, which then hatch in spring. The result is bi-annual swarms for residents.placeholder image
The cluster flies swarm around the building after migrating to Sheffield from the Peak District, before nesting in the gaps in the cladding during colder weather and laying their eggs, which then hatch in spring. The result is bi-annual swarms for residents. | Peter McLoughlin

Peter said: “You think of the gaps from the cladding and the heat coming off the building, and you’ve got a lovely, warm home for them. Very cosy!

“And, all the while, one bin chute of Robertshaw has been blocked for over two months, meaning we have a fruit fly infestation inside the building as well and an appalling, obnoxious stench.”

Peter says he has been complaining to the city council for over five years.

He said: “The council has the audacity to complain about private sector landlords but are deaf to issues when it’s their own properties.

Peter says he and other residents are unable to open their windows or else the flies cover their walls and ceiling.placeholder image
Peter says he and other residents are unable to open their windows or else the flies cover their walls and ceiling. | Peter McLoughlin

“The number of times I’ve complained about it only to be told it’s the job of another department, or told they can’t because of budget, or just passed from pillar to post.

“When I was cabinet member, I could show you newspaper articles of me slagging off my own department if it wasn’t good enough, because that’s what you’re there for. Today’s councils, today’s Sheffield City Council, are more interested in looking better than they actually are.

“I’m sorry but I’ve had enough of it.

“If I can’t get a response or action from the council, when I’m a former cabinet member who knows the system, what about all the vulnerable people in all these flats? What hope do they have?”

Peter says he was previously advised by council leader Tom Hunt in an email from SCC’s environment pest control team to “perhaps install window mesh to prevent the flies entering through the windows or to use fly strips.”

Peter said: “I believe this is passing off responsibility onto rent paying tenants, and it’s unsafe for top floor residents to do themselves.”

A spokesperson for Sheffield City Council said surveys have previously been conducted to address the flies, but that “usual treatments” pose a risk to other wildlife.

“Other actions have been suggested to tenants, which have been rejected,” said the spokesperson.

“Another environmental survey has been commissioned for this week which will at possible ways to clear the flies without harming other wildlife.”

The spokesperson added: “Sheffield City Council was made aware of the blockage to the bin chute at the block previously. The Council recognises that the clearing of the blockage in the chute system this time took normal then longer to rectify. This was due to reasons outside the Council’s control. During this time, efforts were made by the teams who look after the block to ensure less mobile residents were able to still have a waste collection service while the chutes remained blocked.

“The chute has this week been cleared and is now back operational.”

Related topics:
News you can trust since 1887
Follow us
© 2026 Iconic Media Group Ltd. All rights reserved.Cookie SettingsTerms and ConditionsPrivacy notice