LONDON, May 23 (Reuters) - Queen Elizabeth expressed her deepest sympathy on Tuesday to all those affected by the suicide bomb attack in Manchester, which killed 22 people and wounded dozens at a British concert by U.S. singer Ariana Grande in the English city.

"The whole nation has been shocked by the death and injury in Manchester last night of so many people, adults and children, who had just been enjoying a concert," she said in a statement.

"I know I speak for everyone in expressing my deepest sympathy to all who have been affected by this dreadful event and especially to the families and friends of those who have died or were injured."

(Reporting by Costas Pitas, editing by Elizabeth Piper) ((Costas.Pitas@thomsonreuters.com; 02075428024; Reuters Messaging: costas.pitas.thomsonreuters@reuters.net and @Cpitas on Twitter))

Keywords: BRITAIN SECURITY/MANCHESTER QUEEN

LONDON, May 23 (Reuters) - Britain's domestic intelligence agency MI5 said on Tuesday it was revolted by a suicide bomb attack in Manchester, which killed 22 people and injured dozens more at a British concert by U.S. singer Ariana Grande.

"Everyone at MI5 is revolted by the disgusting terrorist attack in Manchester last night," Director General Andrew Parker said in a statement on MI5's website.

"We remain relentlessly focussed, in numerous current operations, on doing all we can to combat the scourge of terrorism and keep the country safe," he said.

(Reporting by Costas Pitas, Editing by Paul Sandle) ((Costas.Pitas@thomsonreuters.com; 02075428024; Reuters Messaging: costas.pitas.thomsonreuters@reuters.net and @Cpitas on Twitter))

Keywords: BRITAIN SECURITY/MANCHESTER MI5