Margaret Thatcher's death after suffering a stroke in the early hours of Monday morning has divided the nation. Bill Gardner, Neil Vowles and Kimberly Middleton report.

The party at the centre of Brighton celebrating Margaret Thatcher’s death has been pencilled in the diaries of her critics for years.

On the first Saturday after Baroness Thatcher “quits this mortal coil” the people who lived through her time as Prime Minister will take to the streets and have a party.

The main event will take place at Trafalgar Square, the scene of a 1990 poll tax riot against a key Thatcher Government policy which was later scrapped and contributed to her political downfall soon afterwards.

But with organisers determined that no one should miss out on the “party of a lifetime”, celebrations have also been organised across the country on Saturday evening – including at the Clock Tower in Brighton.

The “peaceful demonstration of disapproval” has been orchestrated by Worthing teacher Romany Blythe.

The Facebook page The Witch Is Dead Party says: “We cannot let this moment pass without letting the world know that we have not forgotten. We will make our comment on the effect she had and the plan to spend millions of pounds on her state funeral.

“Come and celebrate our liberty and freedom from tyranny! On the day that Maggie stands down, once and for all!”

It adds: “This is a flash party so it will rely on word of mouth and you sending notice of it to as many people as you can via Facebook and your email list or by text and Twitter.

“Please do this so that we can make a point and have a great time with a strong show of support, something that can’t be ignored or go unreported... The more the merrier!”

The event is also being advertised on anarchist and anti-capitalist website 325.

Sussex Police said: “Police have been made aware of rumours on social networking sites about events being planned across the country on Saturday.

“However, we are not aware of any specific plans in our area.”

Just hours after her death, radical left-wingers from the Cowley Club in London Road, Brighton, invited activists to a “Maggie! Maggie! Maggie! Dead! Dead! Dead!” party at the venue on Monday night.

The online invitation read: “Yay she’s dead! Come celebrate 9pm tonight, let’s warm up for Saturday. May have failed to get her in ’84 but she is finally gone so let’s celebrate tonight.”

Police officers were injured and arrests were made across the country as protesters held street parties in the wake of Margaret Thatcher’s death.

On Twitter people referred to the bombing of Brighton’s Grand Hotel in the 1980s: “Margaret Thatcher; born Grantham 13th October 1925, died London 8th April 2013. Sadly missed Brighton 12th October 1984.”