Like you I have spent a long time trying to solve this clue. I have a 3 inches to a mile road map and can't find anywhere to match the clue. I did wonder if Lincs not Lancs but still no joy. Perhaps the setter will read this message.
I apologise. My proof reader was ill. Qu 9 the answer was ROOSTHILL. There is a place but not in the Gazetteer so I thought it best to void it. Sorry if you didn't know, I did put in on the internet. Qu 6 is 9 letters. Setter of quiz.