Feigning surprise as she's arrested in a dawn raid, 65-year-old drug baron Deborah Mason tells an officer reading out the charges: 'Me? No, come on!'

The grandmother and mother to seven children would be exposed in court as the head of a £80million cocaine trafficking network.

As her comment suggests, Mason hardly resembles your typical kingpin.

But she is less rare than you might think, with the Londoner only the latest of a string of women over 50 to end up in jail for overseeing major drug empires.

They include Farzana Kauser, 54, who was locked up last week for smuggling £14.4m of cocaine into Britain using her four sons, daughter, and daughter-in-law.