Most Londoners think their city is likely to be the target of a new terrorist attack, a survey has discovered.

The survey, carried out by Contact4Me, found that 70 per cent said they were "very worried" about a future terrorist attack on the English capital.

But according to the study, 55 per cent of respondents had made no provision for the emergency services or members of the public to contact their next-of-kin if they were caught up in a repeat of 7/7.

Of those people that did have some provision to contact their loved ones, most were relying on mobile phones (61 per cent) or identification held in a wallet or purse (36 per cent).

However, 31 per cent of all respondents surveyed said it had taken up to 3 hours to contact their next-of-kin by mobile phone during last year's 7/7 bombings, with 6 per cent saying it took more than 5 hours.

Seventy-eight per cent of those surveyed kept no record of their medical history on them, the survey revealed.

Contact4Me questioned more than 1, 000 British adults aged between 18 and 65 in late November.

The company was set up by Steven and Sue Salik after one of their daughters was caught up in the 7/7 bombings in 2005.

Contact4Me is a personal emergency database service which allows you to store up to ten telephone numbers (including your doctor's details) and any medical alerts in your very own secure personal database.

This information can be accessed immediately by the Contact4Me call centre, or directly via the internet, by the emergency services or an individual that comes to your aid after an emergency occurrence.