The recent suicide bombings in Tel Aviv, Riyadh and Casablanca have thrust the issue of terrorism to the top of the international agenda again. This time, however, the threat strikes closer to home. Tel Aviv was not penetrated by a hardliner from the Middle East but by two young British nationals, and the question this has raised is whether the UK could be targeted next.

If a suicide bombing did happen in the UK, aside from the human cost, the potential economic damage could be enormous. After politicians have delivered their soundbites, one question will remain – who should pick up the cost?