What's yours? How do people in different areas react to it? Which ones do you like and dislike and which ones are you aware of having stereotypes about? Any you can't understand? Do you ever modify your accent and why? Etcetera etcetera.
Mine's known as the Estuary accent because it originated around the Thames estuary. Now it's spread across the South East. It's basically something between Received Pronunciation and cockney (so avoids being either 'too posh' or 'too common') and might become the new English RP eventually because it's spreading so far. It would be the first time a non-upper class accent will have been the standard, non-regional accent of England, and some of the upper classes aren't happy about that. I've heard people call it 'lazy' speech but that doesn't make sense as the RP accent is non-rhotic (they drop a lot of Rs) so surely that's also lazy, in comparison to for example the South West regional accents, which I bet they wouldn't want to become the non-regional standard either. It's just snobbery. The person most internationally famous with an Estuary accent I can think of is David Beckham, so just think of how he speaks.