Thanks, sallyw. I also have POKER DICE for 3d but no idea how it parses. I am finding a lot of the parsing difficult this week and have quite a lot of (probably right) guesses!
19d Listener absorbing material for The Archers with English reading aids (7)
I have ELEMENT but cannot parse it at all.
21d Tick above right leg causing clot (5)
I have M-R-D (mirid?) but again have no idea how to parse.
Thanks.