The term “Estuary English” can also be considered a milder variety of the “‘London Accent”. The spread of the London Accent extends many miles outside London and all of the neighbouring home counties surrounding London have residents who moved from London and took their London Accent with them. The London Accent or its Londonised milder variant, called “Estuary English”, can be heard in all of the New Towns, coastal resorts, and larger regional cities within 50 to 100 miles (80 to 160 km) of London in southern England.
Phonetician John C. Wells defines Estuary English as “Standard English spoken with the accent of the south-east of England“. The name comes from the area around the Thames, particularly its Estuary.