how should I to find a job, living in PL
I would say it is mission (almost) impossible. My friend found a job this way but it was in 2006 and work agency was involved.
He is talented carpenter and carpenters in the UK are equal gods.
I'm electronics technician unfortunately. I was looking for a job for a six months but unsuccesful. When appeared in the UK I have found a job in two days.