The majority of people were holding banners, flags or signs.
They had a lot of different things on them too such as 'peace' and 'no new nukes'.
Many had a sign that looked nearly like an upside down Y in a circle.
I was curious and questioned them.
They told me that the sign stood for peace and the Campaign for Nuclear Disarmament and that the march has been going on every Easter for 55 years.
New weapons
They were going to rest in Reading that night before walking on the following day to Aldermaston, because that's where there is a nuclear bomb research centre.
Apparently Britain's nuclear weapons are all old and falling apart, and they want to build new ones to take their place.
We decided we would like to join them for the last part of the journey on Easter Monday.
The march restarted at 10am.
We were late so we had to catch up on bicycles.
Musical journey
The walk from Reading was about 10 miles.