Parking at Calais - is it still free?

Good morning fountains of knowledge!

 Some help please!

 A member called me this morning asking if pay and display charges have been introduced in the car park next to the ferry terminal in Calais.

 He understands that there are two car parks, one for cars only that already has pay and display, and a larger car park slightly further away where caravans and motor caravans park up overnight, can anyone confirm if this larger car park is still free?

 If you have recently returned from Calais, or are travelling soon, can you post some feedback?

 Many thanks :)