Jes Staley's City ban is a seismic event for UK financial services - here's why

It is a list that includes the former HBOS banker Peter Cummings, the former Co-op Bank finance director Barry Tootell and the former Credit Suisse First Boston trader James Archer, son of the author and Conservative peer Lord Archer - and now it includes Jes Staley, the former Barclays chief executive.