If you had to name one staple food of the East End of London, it would no doubt be jellied eels. Jellied eels and London have a history that is hundreds of years old, going back to the times when the eel population was thriving in the River Thames. Today, despite the eels disappearing from the river, a handful of local merchants remain. One of these is Barneys, an East End institution, run by Mark Button, by his father Eddie before him — Mark’s son has even gotten involved. Despite the challenges, Mark believes that jellied eels are far from being on the verge of disappearing.