I understand locals are complaining that they had asked for fire alarms in their flats, but the council decided to prettify the outside so the posh people had a nicer view.
There are rules and regs for fire alarms. They are available if you have a hunt for them. These are UK-wide rules.
Alarms inside flats are the responsibility of each individual flat. However the fire brigade will fit for free and puts a lot of energy into getting people to accept them. They are to alert people of a fire within the flat.
Alarms in the public areas are not designed to be heard within flats. The reality of an individual flat's closed front door (which may be a fire door and sound resistant) plus a closed internal door (say a bedroom door) is that of course they are unlikely to be heard. The function of public area fire alarms is solely to warn people in the public areas of a potential fire within those areas.
The building - like most blocks of flats - is designed on the concept that people should stay within their flat in the event of a fire. No large block of flats seeks to evacuate in the event of a fire. Most large blocks have frequent occasions when the alarm goes off, say half a dozen times in a year. Mostly residents don't even know these events have happened. The concept of elderly and infirm trying to evacuate (by stair) is pretty awful for them. It also stops the fire brigade getting up, and the whole point of this sort of block is that the fire brigade have to get to the fire.
These are the rules and regs approved over many years by numerous committees with people from all parties and lots of fire specialist advice. Any block of flats anywhere in the UK where the residents ask for a bell linked to the block fire alarm in their individual flats will have this request refused because this is what the rules say. It is dangerous.
************************************
So what went wrong? We're going to have to wait of course. However there is plenty of film of the fire and experts have looked at these, and the problem does seem to be the cladding. The cladding is designed so that it won't go up in flames. Basically you can put a blow-torch on it and it won't burn. A possible view is that the cladding put on the building wasn't in fact the cladding that should have been put on but an alternative (and cheaper) substance. Different types of cladding are produced for different uses. If this is the case, then we're presumably going to end up with a criminal trial. The fault in this case would presumably be with the contractor. There may be a problem with inspection also, but if the intent were to deceive it may be that the inspector couldn't reasonably pick up on the issue. Does any building inspector send an example of a building material to a lab for a test of what it is? I think the inspection would be to check the paper-work.
I understand the same contractor has clad at lest one other tower. This needs the promptest inspection, including tearing off a chunk and sending it to a lab to see just what it is.
If this is correct then the fault lies with the contractor - not with May, the "Tory Scum", Sadiq Khan (whose loyalty to leader Corbyn is in doubt, so he got heckled today), the council, the capitalists or anyone similar. Rather the fault is with a criminal, if this is what is proved.