Responsible for cards arriving late (10)
I believe the answer is:
behindhand
'late' is the definition.
(I've seen this before)
'responsible for cards' is the wordplay.
'responsible for' becomes 'behind' (I've seen this before).
'cards' becomes 'hand' (I've seen this before).
'behind'+'hand'='BEHINDHAND'
'arriving' acts as a link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for behindhand that I've seen before include "Late or slow in doing something" , "Late - in arrears" , "From which one might snigger" , "not keeping up with schedule" , "in debt" .)