我係英國啊大佬
I'm from the UK, man.

Cantonese Sentence Breakdown

我 ngo5
I
me
my
us
we
our
self
係 hai6
(Cantonese) to be
to connect
to relate to
to tie up
to bind
to be (literary)
to involve
relation
relationship
consequence
yes
indeed
right
英國 jing1 gwok3
United Kingdom
啊 haa4
modal particle ending sentence, showing affirmation
approval
surprise
appreciation
consent
request for an answer or confirmation
大佬 daai6 lou2
(noun) 1. elder brother; (of organisation, company, etc.)
manager; 2. head of department; 3. head of chef; (of gangster) leader