The country moved to its highest level of terror alert -- critical -- after a burning car crashed into the airport.
Four Tornados took off from the Royal Air Force base in Akrotiri, Cyprus, shortly after the House of Commons vote gave the go-ahead for Britain to assist in the United States-led bombing of Islamic State.
Scotland Yard said that they are in the early stages of dealing with an incident at the London Bridge.
The global agency said there are "serious deficiencies" on the part of the country in checking terror-financing and it lacks an effective system to deal with it.
The NSC act became law on Tuesday but did not obtain express Royal assent from king and head of state of Malaysia Yang di-Pertuan Agong unlike other bills passed by the Parliament.
Belgian police continued with the search for suspects in Brussels attack on Saturday, as a series of raids and arrests revealed more links with the November Paris killings and a new French plot.
'What this incident must do is provide a renewed impetus to urgently bring in police reforms; changes that will ensure that political patronage and extraneous pressure are reduced to a minimum and allow the police to function independently and honestly,' argues Vivek Gumaste.
The blast took place during Dhamaal -- a Sufi ritual -- when hundreds of devotees were present inside the premises of the vast mausoleum of the saint.