Thanks for the reply here and you are right I missed some details 

As you say the seller is in china and return address is in the UK

Used the pre paid label, however when trying to locate the tracking info it simply does not show (error with Royal Mail). I have fulfilled my duty to return the item here per consumer regulations. 

How would a card payment company help here? Have not heard of this before, curious to hear more. Given its over 30 days they be limited here