Large pieces of thick cardboard (Whitnash CV34)

Hi - I could do with some pieces of thick cardboard if people have some that is waiting for blue bin day? I'm posting a lot at the moment and need it for packaging. I'm after the thicker heavy duty type - such as used for flat-pack furniture, which I can create bespoke boxes with. In Warwick Gates, so local would be perfect. Many thanks in anticipation.