theMadMarsz's London/UK Slang Dictionary

As a UK writer on Wattpad I come across a lot of comments wondering what certain words mean in books, these comments come in the form of
'What does (said word) mean?'
'But I thought (said word) meant this.'
'I'm so confused so is (said word) bad or good?'
I wanted to create this 'dictionary' of words I have gathered or have seen people be confused about so that my international readers, (and other writers readers) can understand the meaning/s of these words.
FEEL FREE TO SUGGEST OR ASK ME ABOUT CERTAIN WORDS SO THAT I CAN ADD TO MY DICTIONARY OF SLAND TERMS.