I came across a podcast that I liked. There are two hosts, one of which is a man from Essex, and the other one is a woman from Somerset. I understand the woman perfectly, but that Essex accent of a guy and his fast pace of speech was a disaster for me at first... I probably understood 20% of what he was saying. It seemed for me he was talking with porridge in his mouth...
Then I decided to listen to a bit of his speech for a few times. On the fourth time I surprisingly understood most part of the text.
I looked for some videos of people from Essex. Didn't find much - mainly YouTube bloggers imitating accents, but not people originally from Essex. If you know some TV or radio programs that come with this accent, please let me know. I would like to listen to people of different gender and age to understand it better.