Jeremy Corbyn opted not to sing the national anthem during a Battle of Britain memorial service at St Paul's Cathedral this morning.
The new Labour leader - an avowed republican who has previously called for the monarchy to be abolished - fell silent as others sang God Save the Queen during today's commemorations, the Press Association reported.
Since winning the leadership election in a landslide vote, Corbyn has, however, accepted an invitation to become a member of the Queen's privy council.
Accepting a role on the council means he will receive briefings on issues of national security.
Jeremy attended today’s event to show respect for those who fought in conflicts for Britain.
As he said in the words issued this morning, the heroism of the Royal Air Force in the Battle of Britain is something to which we all owe an enormous debt of gratitude.
He stood in respectful silence during the anthem.
Hundreds of veterans, service men and women, politicians and Royals gathered for a major event marking 75 years since the Battle of Britain.
Prince Harry will visit a memorial flypast today to mark the 75th anniversary of the RAF's victory in the Battle of Britain.