On Wednesday hundreds of students gathered to demand bans on hairstyles that “block people’s views” and hijabs deemed “too colourful” were reversed.
They also claimed the school curriculum focused too heavily on white Kings and Queens of Britain over ethnic minority figures.
Head teacher Daniel Smith had been attempting to improve academic rigour at the school with a “back to basics” campaign since his arrival last September.
However the move angered some students and teachers at the school and resulted in a race row.
Mr Smith has since announced the flag will be removed “pending a review”.
Speaking to MailOnline Conservative MP Bob Blackman branded the decision to take down the British flag “ridiculous”.
He added: “There are things where there could be room for manoeuvre if they have got recalcitrant children but to back down over flying the union flag is totally unacceptable.
“It is totally unacceptable to have a position whereby the flag of our country is not allowed to fly above public buildings.”
On Tuesday night the Pimlico National Education Union passed a motion of no confidence in Mr Smith.
He said: “The right to protest is a civil liberty which, in the United Kingdom, we all enjoy, one that was hard fought-for and which not everyone in the world is fortunate to have.
“The issue of the flying of the Union flag was discussed at length.
“We acknowledge that this symbol is a powerful one which evokes often intense reactions.
“We have listened to the concerns of students, parents and the wider community about it.
“After Easter, we will conduct a review of this and, as part of that, consult with all the academy’s stakeholders to elicit their feedback.
“In the meantime, and until that review is concluded, the Union flag will not be flown at the academy.”
Pimlico Academy is run by Future Academies, a trust founded by Tory peer and former minister Lord Nash.
Along with his wife, Lady Nash, he runs the Curriculum Centre which promotes a “new, high-quality curriculum” for schools to use.
This includes a significant focus on traditional subjects like British and ancient history.
On its website the centre states: “This work began in with Pimlico Academy in 2012 and has continued to grow as Future Academies has grown.
“In recent years, we focused on supporting our hub of primary schools in Pimlico, creating a common curriculum in ancient history, British history, English literature, English grammar, Latin, and geography.”
Student protesters handed the school a list of demands accusing it of failing to tackle “racism, Islamophobia and transphobia”.
The school has since amended its head style policy removing the expectation that hijabs “should not be too colourful” and banning hairstyles that “block the views of others”.
Instead students are expected to keep their hair “neat and tidy” whilst at the school.
More to follow…