As with elsewhere in the country, the Bristolian dialect is not as strong as it once was, mainly due to the influence of mass media and the spread of received pronunciation.
Here from a few years ago is a fine example of the local dialect delivered in song by Adge Cutler & the Wurzels many years ago at the Webbington Country Club, Loxton, Somerset.
Adge was born in Long Ashton, just outside Bristol.
Hat tip: Patrick Wise.