The architect dilemma!

So.... i've been talking to friends on the golf course, joiners who are STILL working on our house & locals in the pub, to get some feedback on the need for an architect.
I'm getting conflicting advise as you would imagine.
My joiner friend says if i use an architect & have a problem with the builder later he can't come back to me & say 'well, you never showed me any plans'.
My friend in the pub says all i need is a good builder. He will know all about building regs. etc..
So, my next issue will be: 'where do i find a really good builder who will take on a small project like mine'
If i could find one who is also a plumber & a good project manager then i'll be sorted.
I guess i'm now going to have to go back to my friends on the golf course, pub etc & start getting advice on builders.