I bought four of these 1960s/70s wood veneer and black vinyl chairs from a junk shop in Thornton Heath for £20 (the lot). It's on the road back from Ikea to south London - and a great antidote to the great blue and yellow Swedish vortex.
They'd have cost about three times that in a specialist vintage shop. Thought they'd look great in the kitchen, and 'old' it up a little - but they didn't, so I've scattered them about the house. Piled high secondhand furniture shops are always worth a rummage. I also found a brilliant Stag three-piece bedroom suite for £60 in another junk shop - I'll post that up shortly.