London's got a big ol' population of beekeepers, and the hobby is on the rise. In addition to keeping people in touch with nature while surrounded by an urban envorinment, beekeeping produces delightful local honey.

Furthermore, from the Independent online:

 

"Surprisingly, smoggy urban streets are said to provide a purer honey than rolling fields."

"Huh?" you're saying. Read on:

"'The countryside seems green and clean, but the crops are often covered in pesticides,' explains James Hammill, a former actor turned owner of The Hive Honey Shop in south London, which stocks honey produced at the Hammills' 40 hives across London and southern England. 'Bees in cities produce more honey. We get 40 to 50 jars per hive every season in our country apiaries; in the city, we get more like 150 jars.'"

Crazy and delicious.