All the answers to these cryptic puzzles are stations on the current London Tube Map (2011), which includes London Overground and the Docklands Light Railway. A / indicates a new word

Examples
UK City/Shape = Leicester Square

Mediterranean Island = Cyprus

Animal/Plus/Ancient Monument = Elephant and Castle

Good Luck!

1. Rotate/An Enterprise Captain/Country Road
   
   
2. Doctor Who companion/Valley
   
   
3. Character from Babylon 5
   
   
4. Fictional School
   
   
5. Omnipotent being/enclosed green spaces
   
   
6. Star trek Next Generation Actor's first name/Angry
   
   
7. Stargate Atlantis Lieutenant Colonel's woody plant
   
   
8. Please look after this bear. Thank you.
   
   
9. Queen who founded Torchwood
   
   
10. American City where Fringe is set/large house
    
    
11. Surname of Dan Brown's problem-solving hero/public open space
    
    
12. Cemetery where Douglas Adams is buried
    
    
13. Home of Sarah Jane Smith/New York theatre district
    
    
14. Precious metal/Buck Rogers's birdman/thoroughfare
    
    
15. Buffy's Vampire Lover