The fanatical group Islam4UK has ­announced plans to hold a potentially ­incendiary rally in London later this month. And it is calling for a complete upheaval of the British legal system, its officials and ­legislation. Members have urged Muslims from all over Britain to converge on the capital on October 31 for a procession to demand the full implementation of sharia law. On a website to promote their cause they deride British institutions, showing a mock-up picture of Nelson’s Column surmounted by a minaret. Plans for the demonstration have been ­delivered to the Metropolitan Police and could see up to 5,000 extremists marching to demand the controversial system. The procession – dubbed March 4 Shari’ah – will start at the House of Commons, which the group’s website describes as the “very place where the lives of millions of people in the UK are changed and it is from here where unjust wars are launched”.

The group then intends to march to 10 Downing Street and “call for the removal of the tyrant Gordon Brown from power”. The march will then converge on Trafalgar Square where protesters expect it “will gather even more support from tourists and members of the public, making clear in the heart of London the need for Shari’ah in society”. The group declared: “We hereby request all Muslims in the United Kingdom, in Manchester, Leeds, Cardiff, Glasgow and all other places to join us and collectively declare that as submitters to Almighty Allah, we have had enough of democracy and man-made law and the depravity of the British culture. “On this day we will call for a complete upheaval of the British ruling system its members and legislature, and demand the full implementation of Shari’ah in Britain.”

Last night politicians and fellow Muslims condemned the group’s incendiary comments, which come in the wake of recent violent incidents in towns and cities like Manchester, Birmingham and Luton, Beds. Conservative MP and ex-Army officer Patrick Mercer said: “It is extremely distasteful and is stoking the fires of fear within the British public. “If anyone thinks that those views are a step forward in society they are seriously deluded. They are repellent and repulsive.” The group was also attacked by Tory MP Philip Davies who said: “This march is clearly a deliberate and provocative attempt to incite racial tension and disrupt community cohesion.

“The simple solution is for these people to move to a country which already has sharia law.” A spokesman for the Islamic Society of Britain said: “99.999 per cent of Muslims despise these people. This only serves to fuel racial ­tensions.” And Tory MP and Daily Express columnist Ann Widdecombe, said: “You cannot have two legal systems side by side and the one we have now works and the British people are perfectly happy with it.” The rally has not yet been given final approval. A spokesman for the Metropolitan Police said: “We have received an application for the march but we have yet to meet with the organisers.”

A Home Office spokesman said: “Everyone has the right to express their view so long as it is done sensibly, without violence and does not incite religious hatred.” Plans for the march are revealed on the website Islam4UK, which is fronted by preacher Anjem Choudary who has also called for all British women to wear burkhas. Explaining the Nelson’s Column mock-up he said that under sharia law the construction and elevation of statues or idols is prohibited and consequently the statue of Nelson “would be removed and demolished without hesitation”. At the base of the column the friezes would be replaced with Islamic decoration and giant urns would be filled with gold coins for the poor.