Last one.
22d Writer once used to be attached to pick-up. ?T?L?S. The only thing I can think of is Stylus. But I don't get the other part of the clue....
Last one. 17d White horses old farm labourer picked up. S?R? . Is it Surf or Serf. I am assuming the former as 'picked up' means sounds like. Just would like it confirmed.
Last one. Greetings heard in capital's underground system.
R?I?O?E.
I thought it may be an anagram of Rio metro. But my mind has gone blank. Or maybe I am wrong....
Last one. 12a German bank hoards Laotian money to a large extent G?E?T?Y.
I think I know what the answer is but don't understand it. Would be very grateful for an explanation....