1. 16th and 17th centuries: Emergence of RP, influenced by educated speech of London and Home Counties, associated with ruling class and educated elite
2. 18th and 19th centuries: Consolidation of London English/Southern English with rise of public schools, Classroom English/Educated English
3. Early 20th century: Educated Southern English/RP established as standard pronunciation model, variations based on style, age, social group
4. 1920s: BBC adopted RP for newsreaders, further establishing its association with prestige and authority
5. Last few decades: BBC and British media increasingly tolerant of accent diversity
Accent associated with working-class communities of London's East End, with distinct phonological features like H-dropping, glottal stop usage, rhyming slang
Educated accent in London and Southeast, blending of Cockney, RP, and regional southeastern pronunciation and intonation, predicted to become new standard of English, particularly among younger speakers and those avoiding perceived poshness of RP