10 Across " Unknown location that sees an amount of sport, reportedly. " Answer " somewhere". An amount is "some" but reportedly usually means "sounds like". Can't see that "where" sounds like any...
6 Down is " Everybody, say, on European border ... . Answer obvious " allege", but "border" seems to have no connection. 8 Down is ".... check arresting a border leader " Answer "caliph" and here...
11 Across " Armchair found by couple in a Sumerian city. " Answer " amateur" .
All quite easy " mate" in " a Ur" . Cannot find any connection anywhere to "armchair". Is this peculiar slang ?...
18 Down : Copper charges people helping barmen in Ireland. Answer : "Curates." obviously comes from symbol for copper and rates for charges. Cannot find any connection in Ireland to someone helping at...
4 Down is " Puppet,one captured by surrealist painter, with end of leg missing. " Answer "marionette". So I believe there to be a painter called " maronette " but with a 'g' somewhere in his name....
3 Across : It's used on radio,as I state. Answer " India" - I can't see connection withe clue except " state". Radio often means 'sounds like ' but nothing does !...
5 Down - " Graduate briefly employed by Birmingham school " (6,2,7) Answer is " Master of science" . Apart from 'Graduate' , I can't see why 'briefly', 'employed' , and certainly 'Birmingham school'...
8 Across " Herb is eccentric character, a bit mad at first. "
Answer : CARDAMOM .
I can see the eccentric character = CARD but not how AMOM fits in....
21 Across - Modern Times (italic) issue initially rejected supplement. The answer is " addition " - probably AD is 'modern' , 'Times issue initially rejected' could be 'it' but that leaves a lot more...