The government department promised a review in 2013, but it was soon delayed.
In March 2014, the parliamentary group wrote: "Surely
when you already have credible evidence to justify updating
the guidance
which will lead to saving of lives, you don't need to wait another three years in addition to the two already spent since the research findings were updated, in order to take action?
"As there are estimated to be another 4,000 older tower blocks in the UK, without automatic sprinkler protection, can we really afford to wait for another tragedy to occur before we amend this weakness?"
After further correspondence, Liberal Democrat MP Steven Williams - who was then a minister in the department - replied: "I have neither seen nor heard anything that would suggest that consideration of these specific potential changes is urgent and I am not willing to disrupt the work of this department by asking that these matters are brought forward."
The group replied to say they "were at a loss to understand, how you had concluded that credible and independent evidence, which had life safety implications, was NOT considered to be urgent".
"As a consequence the group wishes to point out to you that should a major fire tragedy, with loss of life, occur between now and 2017 in, for example, a residential care facility or a purpose built block of flats, where the matters which had been raised here, were found to be contributory to the outcome, then the group would be bound to bring this to others' attention."