A man was charged with possession of cannabis on Sunday after being arrested while driving in Streatham.
Jose Nobrega, 29, of Mcrae Lane, Mitcham, was also charged with driving without insurance or a valid license.
Lambeth police arrested Mr Nobrega in Ambleside Avenue about 9.15pm on Saturday while carrying out automatic number plate recognition.
Officers searched his VW Polo and found cannabis in the vehicle.
Mr Nobrega has been bailed to appear at Camberwell Green Magistrates Court later this month.