THE homemade explosive thought to have been used in both London bombing waves can deteriorate after just a few days.

The death toll from last week’s London suicide bombings stands at 55 today after another victim lost his fight for survival and his girlfriend was formally identified.

Shaun Connolly, Leeds

Inquests into the deaths of eight victims of last week’s terrorist attacks in London - including 22-year-old Ciaran Cassidy - will be opened today.

Louise Hogan

Shaun Connolly, Irish Examiner Political Staff

AT least 21 people were killed when a bomb went off in a tunnel between King’s Cross and Russell Square at 8.56am.

The second blast in London, which ripped through a packed Piccadilly Line train deep under London’s streets, was the most lethal.