George Osborne has said Moody's message is "explicit" to carry on with austerity.
He says "we can either abandon our efforts to deal with debts" or we can "redouble our efforts" and make a brighter future for our children.
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This year's Pride in London event will include a minute's silence to commemorate the victims of the Orlando shooting.
An urgent appeal has been made to help trace the mother of a five-year-old girl who was found alone at a bus stop in Brighton on Friday.
Weight of people trying to sign caused government petition to website to crash as Europhiles try to force a rerun of the EU vote.