Non-UK GAF, do you wish the sample the uttery finery of an Essex experience?
Next time you visit London way I would point you over to -
Steam & Rye, City of London
Coq d'Argent, City of London
Madison, One New Change, City of London
EDIT: Also Forge (previously Abacus), City of London.
Any Jewel Bar in Zone 1
SugarHut (TOWIE central, the epicenter of all that is Essex, but negative that it is actually IN Essex)
Any number of Shoreditch bars - Golden Bee, Boundary, even the Shoreditch House which has now gone down the shitter with the Essex invasion.
Thursday nights are guaranteed 100% hit-rate for the Essex train.