The former Conservative housing minister warned against increasing fire safety regulations to include sprinklers because it could discourage house building.

As the death toll from the Grenfell Tower blaze rose to 12, it emerged Brandon Lewis, who was recently promoted to immigration minister, said in 2014 that building developers should not be forced to fit sprinklers.

A sprinkler system would have "undoubtedly" saved lives at the Grenfell Tower blaze, the managing director of the Fire Protection Association told The Independent.

"Whether they'd have stopped that fire spreading at the speed it did up the outside of that building is another matter," Jon O'Neill said.

Grenfell Tower continues to smoulder 24 hours after start of fire

"But to have had sprinklers in that building would have created an environment where it would have been easier to rescue people and increase survivability."

Mr Lewis' department declined to bring in regulation forcing developers to fit sprinklers while he was in charge.

He told MPs: “We believe that it is the responsibility of the fire industry, rather than the Government, to market fire sprinkler systems effectively and to encourage their wider installation.”

He said the Tory Government had committed to being the first to reduce regulations nationwide.

Grenfell tower fire Show all 42 1 /42 Grenfell tower fire Grenfell tower fire Local residents watch as Grenfell Tower is engulfed by fire Getty Images Grenfell tower fire London Fire Brigade said there has been a number of fatalities from the blaze Rex Features Grenfell tower fire The fire was first reported in the early hours of Wednesday and continued into the morning Rex Features Grenfell tower fire A local resident sees the fire over the rooftops @Ebajgora Grenfell tower fire A firefighter reacts at the scene of the blaze Getty Images Grenfell tower fire Residents watch as the blaze continues Getty Images Grenfell tower fire More than 200 firefighters have been fighting the blaze PA Grenfell tower fire London Mayor Sadiq Khan has declared the fire a major incident Getty Images Grenfell tower fire Police and fire services attempted to evacuate the concrete block of flats Getty Images Grenfell tower fire A woman runs to assist paramedics working at the fire at the Grenfell Tower Getty Images Grenfell tower fire Smoke rises from the building after a huge fire engulfed the 24 story Grenfell Tower in Latimer Road, West London in the early hours of Wednesday morning Getty Images Grenfell tower fire Fire fighters tackle the 24-storey building in West London Getty Images Grenfell tower fire Ambulances are stationed nearby Getty Images Grenfell tower fire Paramedics arrive with oxygen Getty Images Grenfell tower fire Emergency services believe it will take some time to establish the cause of the fire Grenfell tower fire Tens of people have been taken to five different hospitals across London Getty Images Grenfell tower fire A man comforts a boy after the tower block was severely damaged Reuters Grenfell tower fire Firefighters stand amid debris in a childrens playground nearby Reuters Grenfell tower fire Firefighters are stationed at the building Getty Images Grenfell tower fire Smoke engulfs Grenfell tower Rex Features Grenfell tower fire Lots of people donating water, food and clothing to St Clement's church for the residents of Grenfell Tower in Latimer Road Samuel Osborne Grenfell tower fire A man speaks to a fire fighter after a huge fire engulfed the 24 story Grenfell Tower in Latimer Road, West London Getty Images Grenfell tower fire According to the London Fire Brigade (LFB), 40 fire engines and 200 firefighters are working to put out the blaze. Residents in the tower were evacuated and a number of people were treated for a range of injuries EPA Grenfell tower fire A resident of Grenfell Tower is trapped as smoke billows from the window after a fire engulfed the building Getty Images Grenfell tower fire Members of the emergency services work at the scene of a huge blaze which engulfed Grenfell Tower, a residential tower block in Latimer Road Getty Images Grenfell tower fire According to the London Fire Brigade (LFB), 40 fire engines and 200 firefighters are working to put out the blaze EPA Grenfell tower fire Fire fighters tackle the building after a huge fire engulfed the 24 story Grenfell Tower in Latimer Road, West London Getty Images Grenfell tower fire The burnt facade of Grenfell Tower, the night after the fire in Latimer Road, West London REUTERS/Neil Hall Grenfell tower fire Local residents gather at a community centre near Grenfell Tower in Latimer Road REUTERS/Toby Melville Grenfell tower fire A resident in a nearby building watches smoke rise from Grenfell Tower in Latimer Road, West London AP Grenfell tower fire Police and rescue services operate near the fire at Grenfell Tower, a 24-storey apartment block in Latimer Road EPA Grenfell tower fire A man stands amid debris on the A40 after a serious fire in a tower block at Latimer Road in West London REUTERS/Toby Melville Grenfell tower fire A view of the empty A40 highway after it was closed in both directions, due to the proximity of the fire at Grenfell Tower block in Latimer Road EPA Grenfell tower fire Smoke rises from the building after a huge fire engulfed the 24 storey residential Grenfell Tower block in Latimer Road, West London Getty Images Grenfell tower fire Bodies are removed from the scene after a fire engulfed the 24-storey Grenfell Tower in west London Rick Findler/PA Wire Grenfell tower fire Bodies are removed from the scene after a fire engulfed the 24-storey Grenfell Tower in west London Rick Findler/PA Wire Grenfell tower fire Provisions on tables at the Westway Sports Centre close to the scene after a fire engulfed the 24-storey Grenfell Tower in west London Jack Hardy/PA Grenfell tower fire Beds are laid out in the Westway Sports Centre close to the scene after a fire engulfed the 24-storey Grenfell Tower in west London Jack Hardy/PA Wire Grenfell tower fire A pile of donated clothes, sleeping bags and water lie next to a police cordon near the burning the 24 storey residential Grenfell Tower block in Latimer Road, West London Getty Images Grenfell tower fire Signs asking for donations are seen outside the Notting Hill methodist Chruch Getty Images Grenfell tower fire Smoke rises from the building after a huge fire engulfed the 24 storey residential Grenfell Tower block in Latimer Road, West London Getty Images Grenfell tower fire A man is rescued by fire fighters after a huge fire engulfed the 24 storey residential Grenfell Tower block in Latimer Road, West London Getty

He added: “The cost of fitting a fire sprinkler system may affect house building – something we want to encourage – so we must wait to see what impact that regulation has.”

Earlier in the Westminster Hall debate to mark Fire Sprinklers Week, he had admitted: "Sprinklers work. We know that. No one can deny it.

"The myths around sprinklers have been well explained and debunked here today.

"They are an effective way of controlling fires and of protecting lives and property."

Paul Fuller, chief fire officer for Bedfordshire and chairman of the Fire Sector Federation, said sprinklers could have helped.

He told BBC Radio 4's World At One: "We know that sprinklers are effective. Also, sprinklers will make the environment more survivable by containing the fire and containing the smoke.

"But they are not a total solution. We also have to make sure that passive protection measures - things like the structure of the building and the fire resistance of the building - are all properly in place as well."

He added that the federation has been calling for a review of part B of the building regulations "for a number of years now" to ensure they "meet the needs of a modern society using modern methods of construction and who use buildings differently from the way we used to 30 or 40 years ago".

In 2013 the All-Party Parliamentary Fire Safety & Rescue Group called for a review of safety regulation after six people died and more than 20 were hurt in a 2009 blaze at Lakanal House in Camberwell.

A government spokesman said that following the Lakanal House fire, the coroner recommended the guidance relating to fire safety within the building regulations be simplified, work he said is ongoing.

The coroner also asked government to write to councils encouraging them to consider retro-fitting sprinklers, he said, adding that it had happened.

The spokesman added: “Our thoughts are with the residents and families of everyone caught up in this dreadful event. We stand ready to help in any way possible as the emergency services continue to stabilise the situation.