The following cryptic clues are Londen underground, DLR and north london railway line stations. I am tring to complete a quiz from www.netquizzes.com and these are the final 7 of 150 stations I need. Any help of suggestions welcome. Thanks
1. Patella isn't blue 2. Crocodile jeans 3. Small boat heading for America 4. Reasonable chop 5. Distant loop of mafia boss 6. Empty approach street 7. Heavy brook