### Clue: In London district, foreign cash goes on drug providing a fix (15)
### Answer: TROUBLESHOOTING 
 ### Explanation: In London district, foreign cash goes on drug providing a fix (15)
In **TOOTING **("London district"), **ROUBLES **("foreign cash") goes on **H **(heroin, so "drug") 
**T (ROUBLES H) OOTING