It was a very civilised protest. The sort of protest you might expect from roughly 10,000 asset-rich, cash-poor millionaire farmers from all over the country. The police officers there just to redirect the traffic.
Only the occasional shouted slogans to punctuate proceedings; most people were just happy to be there. "What do we want?" "To not pay inheritance tax on our farms." It had a ring.
Whitehall has probably never seen so much tweed. Nigel Farage was out there looking like Mr Toad. Flat cap, pristine Barbour jacket, mustard trousers and green wellies.
He never can resist a chance to cosplay. Someone might have told him that the streets had been tarmacked a while back. There again, Nige is always willing to piggyback on other people's grievances.
Perhaps he might first like to explain why Brexit has hit farmers so hard. Also on the march were Kemi Badenoch and Victoria Atkins, the shadow environment secretary, in a migraine-inducing union jack jacket. Kemi stood up to address the crowd.
This is your new Defra team, she said, and I commit to repealing the end to agricultural property relief in five years' time. She may have got a little ahead of herself here. Most farmers don't have fond memories of the past 14 years.
Part of the problem is that the changes to inheritance tax are merely the final straw. Farmers tend to believe they have been screwed over by both the Tories and Labour. The guest of honour was the newfound celebrity farmer, Jeremy Clarkson.
"This is the end.