"Let me get this straight,
Let me get this straight, someone known to the secret services blows himself up in my home town and this scumbag government is trying to use it to get laws through even though they would not have prevented or made any difference to what happened."
Just as the Madrid bombings were used when the UK had the chair of the EU to push through the EU Data Retention Directive, despite Spain (and several other countries) having zero interest in doing so. It has taken years for other countries to dial back this BS.
To the data fetishist cabal within the Home Office any terrorist event is another "opportunity" to tell Parliament how they would have been stopped (despite all evidence to the contrary) with yet more surveillance.
This has FA to do with "keeping people safe."
Mass surveillance is now cheap enough and easy enough (because of how much most people do on line) that (to a certain kind of senior civil "servant") it's just cheaper to do so.
"Give me 6 lines from an honest man, and I'll find something with which to hang him" as the Cardinal put it.