moving to uk

hello there , i live in greece and think of moving in uk. I'll live with a friend
I need some help tho
will i be able to get a work there?
He told me i'll be an agency worker r8..he also told me i'll need my passport for that!He said that i don't need it as an employee or a self-employee but i'll surely need it as an agency worker.
i wanna know, do i need my passport for that? I don't have one cuz it wont be needed to get to uk as long as im an EU member as i know

If you work for an agency you are an employee of that company. You need to prove "right of work" and currently that would be your passport or national identity card. Recommend you ensure you understand what is required and don't necessarily rely on your friend - it is your responsibility to have everything in order.