For more information on Accents and Dialects, to help you Learn English in the united Kingdom, highly recommend British Library as a learning resource. Below is a snippet from their site;
All languages change over time and vary according to place and social setting. The way we speak is influenced by many factors — the roots of our elders, our social and educational background, our working environment, our friends and our own sense of identity. As we move across the country we experience the changing landscape and architecture. At the same time we notice a gradual change in the sounds we hear — the accents and dialects that immediately conjure up a sense of the place to which they belong. The terms accent and dialect are often used interchangeably, although in strict linguistic terms they refer to different aspects of language variation.
What is a dialect?
A dialect is a specific variety of English that differs from other varieties in three specific ways: lexis (vocabulary), grammar (structure) and phonology (pronunciation or accent). English dialects may be different from each other, but all speakers within the English-speaking world can still generally understand them. A speaker from Newcastle-upon-Tyne, for instance, might pepper his speech with localised vocabulary, such as gan for “to go” or clarts for “mud”. He may often use regional grammatical constructions, such as the past tense constructions I’ve went and I’ve drank or the reflexive pronouns mysel, yoursel, hissel etc. In addition he probably uses a range of local pronunciations. For all these reasons he could be described as a Geordie dialect speaker.
What is an accent?
Accent, on the other hand, refers only to differences in the sound patterns of a specific dialect. A speaker from Newcastle-upon-Tyne who generally uses mainstream vocabulary and grammar, but whose pronunciation has an unmistakeable hint of Tyneside, should properly be described as having a Geordie accent. In other words, dialect is the umbrella term for a variety of linguistic features, one of which is accent. True dialect speakers are relatively rare, but despite popular belief we all speak with an accent.