I do know that nigthclubs and any public place where large crowds gather can be potential targets.
http://www.timesonline.co.uk/tol/news/uk/article2003808.ece
From Times Online
June 29, 2007
“Car bomb defused near London nightclub”
ARTICLE SNIPPET: “The car was discovered to contain two gas canisters and was reported to to be full of nails.”
ARTICLE SNIPPET: “Terror groups like al-Qaeda are believed to have been planning attacks on nightclubs, which are considered by Islamic fundamentalists to be symbols of Western decadence.”
ARTICLE SNIPPET: “Earlier this year, a number of Islamist extremist terrorists were imprisoned for planning a number of major terror attacks, including a bomb attack on London’s Ministry of Sound nightclub.
Tiger Tiger is a combined bar, restaurant and nightclub, part of a wider national chain, that opens from midday until the early hours of the morning. It has several floors, and has a capacity of 1,700. Last night was scheduled to be ‘ladies’ night’ at the club, complete with female DJ.”
ARTICLE SNIPPET: “Earlier this month security spot checks were introduced on petrol and chemical tankers, cement mixers - and other vehicles that could be used by suicide bombers - on key routes into London.”
ARTICLE SNIPPET: “An al-Qaeda terrorist convicted last year had been planning vehicle-borne bomb attacks in London when he was arrested. Dhiren Barot pleaded guilty to plotting a series of attacks, including detailed plans to pack stretch limousines with gas cylinders and explosives and detonate them in car parks beneath hotels or office blocks”
There was this report last year:
Gang ‘planned to bomb London nightclub’
“Jawad Akbar and Omar Khyam, both members of the group - which was allegedly linked to al-Qaida - considered the Ministry of Sound, which can hold up to 1,800 people, to be an easy target.
Mr Akbar said they would not be blamed for killing innocent people at the club but “those slags dancing around”, the jury heard.”
http://www.guardian.co.uk/terrorism/story/0,,1783239,00.html