GETTY The Labour leader took over three hours to congratulate the Duke and Duchess of Cambridge

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Over three hours after Kensington Palace officially confirmed the news, Jeremy Corbyn tweeted: “Congratulations to Kate and William on the birth of their baby boy. I wish them all the very best.” Before the Labour Party leader offered his warm wishes towards the royal couple, web users took to Twitter and said: “Still no acknowledgement of #RoyalBaby @UKLabour or @jeremycorbyn ... disappointing.” Another user commented: “3.5 hours later, not a single congratulations on the royal birth from @UKLabour or @jeremycorbyn.” Meanwhile, other Twitter users said: “#Royalbaby Why hasn't @jeremycorbyn sent congratulations? He's supposed to be Leader of Her Majesty's LOYAL Opposition.

Royal baby in pictures: Adorable photos of baby Prince Cambridge Wed, April 25, 2018 Kate Middleton and Prince William welcomed a royal baby boy weighing 8lbs 7oz. Play slideshow PA 1 of 49 Royal baby pictures: Leaves St Mary's hospital

TWITTER/@JeremyCorbyn Mr Corbyn wished the Duke and Duchess of Cambridge 'all the very best'

Congratulations to Kate and William on the birth of their baby boy. I wish them all the very best Jeremy Corbyn

“Still no congratulations from @jeremycorbyn on the #royalbaby?” Prime Minister Theresa May was quick to congratulate Kate and Prince William, extending her well wishes just half an hour after Kensington Palace’s official announcement shortly after 1pm. Mrs May said: “My warmest congratulations to the Duke and Duchess of Cambridge on the birth of their baby boy. I wish them great happiness for the future.” Meanwhile the Mayor of London Sadiq Khan tweeted: "On behalf of Londoners, I want to send our warmest congratulations to the Duke & Duchess of Cambridge on the birth of their baby boy." The Royal Navy and the BT Tower also shared messages of congratulations to Kate and William.

TWITTER Web users took to Twitter to vent their frustration over My Corbyn's delayed well-wishes

Kate and Prince William welcomed their baby boy into the world on St George’s Day, weighing 8lbs 7oz, at 11.01am. The Duke of Cambridge remained by his wife’s side when their son was delivered by staff at the London hospital. Kensington Palace announced the news on Twitter, writing: "Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 1101hrs."The baby weighs 8lbs 7oz. "The Duke of Cambridge was present for the birth. "Her Royal Highness and her child are both doing well.

TWITTER Prime Minister Theresa May congratulated the royal couple in under 30 minutes after the announcement

GCIMAGES Princess Charlotte and and Prince George visited the Lindo Wing this afternoon to see their brother