Battersea Power Station:

We wanted to use a building which was recognisable but also not as high profile as certain landmarks in London such as the London eye. We felt that something too public would be harder to make people believe had been attacked/targeted. Also Battersea Powerstation is derelect meaning we would find it easier to work with for filming purposes i.e. having less people getting in the way of shots, but also, if the final product did come as a massive shock, people would know that it is derelect therefore no-one would be in the vicinity and under threat.