north sea feeder crossword clue

 The crossword clue "North Sea feeder" can be Thames. The Thames is a river in England that flows through London and into the North Sea. It is the longest river in England, and it is one of the most important rivers in the United Kingdom.

Here are some other possible answers for the crossword clue "North Sea feeder":

THAMES

SEVERN

OUSE

TYNE

MERSEY

I hope this helps!