Gavin Grey: UK correspondent on King Charles leading tributes for the 20th anniversary of the London bombings - Heather du Plessis-Allan Drive

King Charles led commemorations on the 20th anniversary of the 2005 London transit bombings - the deadliest attack on the capital since World War II.

52 were killed and over 700 were injured when four men inspired by al-Qaida blew themselves up on three subway trains and a bus during rush hour on July 7th, 2005.

UK correspondent Gavin Grey says King Charles spoke of the importance of unity.

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