King Charles has condemned the 'senseless attack'.

King Charles 'utterly shocked and horrified' by Sydney stabbing as royals pay tribute to victims of 'senseless attack'

Prince William and Kate have offered their thoughts to those affected by the incident.

Princess Kate shares emotional message with victims of Sydney shopping centre attack after at least six killed

Prince William was seen smiling and applauding in the Villa Park stands in Birmingham with his eldest son.

Prince William and Prince George cheer on Aston Villa in first public outing since Kate's cancer announcement

The Prince of Wales has shared a personal message on the account he shares with Kate

Prince William breaks silence after Kate's cancer diagnosis as he shares personal message

The brothers could make up after King Charles' and Princess Kate's "very serious illnesses", says one royal commentator.

William & Harry may finally end feud after Royal Family cancer shocks

The royal couple have reportedly put the 'Harry problem' to the back of their minds.

William and Kate have put ‘Harry problem’ aside and have ‘no plans for reconciliation’ during his visit next month

Deborah James would have been 'proud' of Princess Kate, her parents have said.

Deborah James' parents say daughter would have been ‘proud’ of Princess Kate’s bravery in cancer battle

William and Kate will not be at the Easter service

Kate, William and family 'will not join other royals at traditional Easter service' after cancer diagnosis

The Prince pulled out of the memorial for his godfather King Constantine following the news.

How Prince William 'found out' about Kate’s cancer diagnosis before pulling out of Windsor Castle memorial service

Downing Street has urged the public to 'get behind the Princess of Wales'.

Leave Kate alone: Downing Street urges public to 'get behind Princess' as she recovers from abdominal surgery

Kate and William were pictured visiting the farm

Shopper who filmed Kate and William in farm shop urges 'delusional' conspiracy theorists to 'lay off' princess

Tina Brown, former Vanity Fair editor, joined LBC's Andrew Marr this evening

Princess Kate conspiracies ‘should worry Buckingham Palace’ as royals need ‘massive reboot’, expert warns

Prince William (L, R) on a visit to Sheffield today

Prince William breaks silence with touching remark wishing Princess Kate was 'by his side'

Heidi Agan confirms it is not her in a recent video of William and Kate leaving a farm shop in Windsor

'I was 120 miles away!' Kate lookalike confirms it's not her in farm shop vid and shuts down 'crazy' conspiracies

Prince William was cheered by crowds in Sheffield

Prince William cheered by crowds as he's seen for first time after trip to the farm shop with Princess of Wales

High-level royal aides are planning Kate's return to royal duties after she was spotted at Windsor Farm Shop

Operation Comeback Kate: Inside secret back-to-work plan for Princess's return to public life

Kate and William were pictured visiting a farm shop in Windsor together

'Remarkable' Princess of Wales deserves privacy as she recovers, minister says as video emerges of farm shop trip

Kate and William were pictured visiting the farm

Smiling Kate spotted on shopping trip with William as she continues recovery from surgery

The Princess of Wales was said to be "happy, relaxed and healthy” on a visit to a farm shop in Windsor

Princess of Wales ‘happy and healthy’ on visit to farm shop with William in first public sighting since surgery

The King is determined to attend his official birthday celebrations - even if he has to enjoy Trooping The Colour from a carriage.

King Charles ‘determined’ to attend Trooping the Colour but could watch ceremony from podium and not on horseback

Prince William has paid tribute to his mother who taught him that as he attended the Diana Legacy Award - while Prince Harry was set to appear via video link after his brother left the event

Prince of Wales marks 25th anniversary of Diana Legacy Awards - with Harry joining via video link after William left

The Prince of Wales' comments about his wife come as the couple are facing intense scrutiny about an edited family image released to mark Mother's Day.

'My wife is the arty one': William sings Kate's praises as he brushes off Mother's Day photo row on visit

Prince William plays basketball on visit to youth centre

Prince William puts Kate picture row behind him as he plays basketball on visit to youth charity

Prince William and Harry will both make appearances at the memorial event.

Still contintents apart - Harry and William to attend Diana memorial event but will not appear at the same time

Kate's Mother's Day family photo (L) sparked controversy. Harry and Meghan (R)

Princess of Wales is 'recovering well and will be back by Easter' despite photo editing storm, royal insiders claim

Kate edited controversial Mother's Day picture (l) to make it 'as good as possible' William and Camilla at the Commonwealth Service

Royals ‘rally around Kate’ as ‘Photogate’ played down by insiders as ‘bump in the road, not an earthquake’

Kate's Mother's Day family photo (l) sparked controversy. Harry and Meghan (r)

‘This isn’t a mistake Meg would make’: Harry and Meghan wade into Kate's Mother's Day photo mess

Kate edited controversial Mother's Day picture (l) to make it 'as good as possible' William and Camilla at the Commonwealth Service

Kate's Mother's Day picture taken in 40 minute family window and edited twice 'so her children looked good'

Prince William attended the Earthshot Prize awards this evening

Prince William makes solo appearance at climate event hours after Kate apologised amid 'Photoshop' row

Meghan Markle spoke out on Friday

Meghan Markle says she was hit with 'cruel' online abuse during 'sacred' pregnancies with Archie and Lilibet

Harry and Meghan could be plotting a UK return

Harry and Meghan 'plot UK return' amid 'vacuum' caused by Charles' illness and William stepping back to care for Kate

Kate's uncle addressed the royal feud in Wednesday's episode of Celebrity Big Brother

Prince Harry and Meghan Markle should be stripped of their royal titles, says Kate's uncle