Ferry Meadows, a large site on both sides of the road and even outside of School holiday dates was heaving with caravans. Arriving on Saturday proved hard to find a pitch, skill is clearly to take the first one you see as by the time you get back to it, it will be gone...but arriving on Sunday or during the week had a bit more choice. Very clean site and in a great location, the Country park is a 5 minutes walk away. Highlight, sad I know, was the Ice Cream van that visits the site in the evening. Disappointed now when I go other sites and they don't have one !  Very peaceful site despite its size and we were there during the Caravanner of the Year award..ssh can't talk about it...but the hog roast was superb.  TV if you want to watch it was sometimes very good and oddly sometimes patchy even using the hook up on the power tower.  Steam trains run along the back of the site and run into Peterborough if they are running. Expensive way to travel into town but its a tick on the list ...  Would certainly go back.