United Kingdom buying price inquiry of plastic scraps

Hi,
My name is *** and I'm Executive Director at ***
We are a Bulgarian Polymer recycling company(currently in the final stages of comissioning the plant),
we buy and process PET and HDPE post consumer bottle and industrial scrap.
We are looking to create long term relationships with suppliers of plastic waste.
Could you please advise if you sell PET/HDPE scrap, quantities and prices for the following:
1.) PET bottle scrap - all colours
2.) HDPE bottle / crate / post-industrial scra