Possible Clues:

• Stick to the point over a London park
• Flap over brief article on London district
• Whack pithy American in London
• Water added to floury mixture in park
• District of Wandsworth
• Home for animals of the ocean under cover (suitable for fish)
• Pound? Main location of dog pound
• London district in which a noted dogs and cats home is situated
• Area of SW London
• Pound -- main place for stray dogs