Banks, of Essex, had drunk 16 pints the previous night and had come to London to "protect statues" – but admitted he did not know which ones.
The picture was taken during a far-right protest in London on Saturday.
Crowds applauded as the hearse passed by.
The funeral service was attended by around 50 members of Palmer’s family including his wife, five-year-old daughter, parents
He gave his life protecting the Houses of Parliament.
Four other innocent people were killed and dozens of others injured in the 82-second atrocity on Wednesday 22 March, which
Palmer's funeral is due to take place on Monday.
The body of the policeman murdered in the London terror attack will lie in a chapel in the Palace of Westminster before his
The grief felt by rank and file officers will be accompanied by a renewed realisation that the tragedy could provide a springboard for other zealots to create mayhem and that officers, now more thinly spread than ever, could be vulnerable especially outside the major cities. The death of a brave officer in the most heavily policed area of the UK will indeed be a cause for concern.
The police officers who directed others away from danger, while moving towards it themselves. The ambulance crews and staff at nearby hospitals who fought to save lives and comfort the injured and traumatised. My colleague Tobias Elwood, who did his best to save a dying police officer. Such people epitomise public service. I said after last year's tram crash that we don't say thank you enough. So to all those who helped to keep my staff and I safe: thank you.