Answers are circled letter in the word that link the 3 given words
1) 6th letter of word that links Award, Police Royal == ? (A??????)
2)4th letter of word that links Core, Public, Spa == L (Health)
3)6th letter of word that links Moss, Rapid Zone == I (Transit)
4)4th letter of word that links Hull, Jewels, Prince ==W (Crown)
5)4th letter of word that links Keel, Pump, Water == ?
6) 4th letter of word that links Dress, Man, Strings ==? (A???N)
So far I have only ? L I W ? ?