A delegation from Waltham Forest have called on the Home Secretary to ban a planned demonstration by the English Defence League this weekend.
Made up of schoolchildren, councillors and community leaders, it arrived in Westminster by bus today to directly hand in their petition.
Fifty EDL members have already been banned from travelling to East London after being arrested during a march last month.
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The plaque at number 16 Cowley Street in Westminster marks the brown brick Georgian townhouse where Sir John lived for 31 years.
A man reportedly armed with several knives has been arrested in Whitehall on suspicion of planning a terror attack, police have said.
Metropolitan Police officer, Tom Harrison, has been crawling the course since the race began on Sunday morning.