Honest question, as I'm not familiar with the UK's programs; does that mean they patrolled and secured Islamic neighborhoods?
I also have to ding the article a bit here, for not explaining the difference between the French and UK approaches, aside from one being more successful than the other.
It is perhaps a bit more complex than just a different approach - London is a lot more integrated a city (in terms of racial / religious mix as well as wealth disparity) than Paris is (in short, there really aren't any "Islamic" neighbourhoods in London, though there are areas that might be described as such in some parts of the North), its a lot easier for immigrants to get on here (or at least have evidence that its possible to get on) and also the parts of the world from which most of "our" Muslims have historically come (the subcontinent) are quite a bit different to the French Muslims (North Africa), and there is a much different historical context to the relationship between the host country and those parts of the world as well.
In short there isn't really the underclass defined by race here that appears to exist in some of their banlieues (though some of the recent policies enacted by the Tory administration here seem determined to create one) that seems to have provided the staff for most of their problems, which means that our problem seems to be idiot converts (the two murderers of Lee Rigby and at least one of the 7/7 bombers) and bad men with a talent for leadership like Mohammed Siddique Khan, who organized the 7/7 bombings. What effect the immigration crisis will have is anyone's guess, though if the attacks continue (or at least take place in Germany) one would imagine that Angela Merkel will be dumped sooner rather than later, as she should given her considerable role in it.
That said, it also shouldn't be forgotten that what used to be Special Branch have a lot of institutional memory and experience of dealing with lengthy terror campaigns and working with intelligence agencies / the armed forces, almost certainly far more than either the French or Belgians have. They have intercepted a lot of stuff, indeed some people got convicted just this week -
http://www.itv.com/news/2016-03-23/british-student-known-as-the-surgeon-plotted-is-inspired-terror-attack-on-streets-of-london/