Unfortunately, I cant provide any more on this tragic fire.
One thing I can say is that there are two sources of information that can be misleading in these sorts of incidents. 1) Witnesses and 2) the media. To illustrate this, I recall a multi fatal fire in Granville Rd Hayes where a lady and a number of her kids died. Witness told the media that they had seen the mum running around the 1st floor bedroom chanting when the house was alight. It was nonsense, as in fact her husband had killed her before setting fire to the place
So I doubt whether the 'explosion' reported in Heston was due to a gas meter by pass, or indeed anything to do with gas. Looking a the photos (OK, not the most scientific method of research) there is no evidence of windows being blown out, just glazing & other fire damage consistent with a fire in the top floor flat, spreading to the roof.
When a fire develops, there are many reasons why 'explosion' type noises can be heard. From aerosol cans exploding and windows breaking (broken glass falling to a pavement will sound like an explosion to a sleeping person who is woken by it) - to a backdraft or flashover - two different ways in which fires develop and spread.
Fire originating from bypassing gas (or electric) meters is surprisingly rare. I can only recall a handful (around 5) in 32 years in the fire service. The most dramatic was a block of flats near what is now Westfield White city. A local Arthur Daley was knocking out gas meter bypass 'kits' at a pub on the Edward Woods estate. This area consists of 5 x 22 storey blocks of flats.
http://farm9.staticflickr.com/8334/8147 ... 7675_z.jpg The kits used plastic garden hose and connectors. One poor sod has installed such a kit and many weeks later it leaked and the resulting explosion sent him on an 18 storey head first tumble into the car park below. Not a pretty sight
The gas authority attended and acting on info that these devices were widespread, Police carried out a number forced entries to sample how widespread this problem was. The results were alarming. Within hours, the gas was isolated to all of the estate and over the next few days, Police assisted gas officials to enter all 350+ flats to search & remove scores of devices. This could have so easily have turning into another Ronan Point disaster
I have no idea what stared this Heston fire, but there are many premises in the Southall/Heston area which are dangerously over crowded. This brings a who load of problems and I understand this is why the landlord is being questioned.
One thing I am 99% certain about - I doubt whether this flat had a working smoke alarm. God knows why anyone wouldn't have one. At < £5 (or free if you ask the fire brigade for one), it's mad that people dont have them or test them regularly. WHEN WAS THE LAST TIME YOU TESTED YOURS??