At centre parcs there is £950 difference between these two 4 night break the only difference being the week it is and one saying a new style (granted you'd expect to pay a touch more for new but not £950). The first is in term time and the second is in the school holidays.

I choose these as the examples because that was the cheapest for those weeks. There are many more examples on other sites for other uk breaks/holidays too. 

Please help me share as much as possible.

Also there is a facebook page someone else has set up which targets the same cause as us. Follow the link below 

https://www.facebook.com/groups/HPIholidaypriceincrease/