Not cordless but not £200 either these were workhorse headphones for me for a couple of years when I was flying to Sweden and back every week - £60 on eBay: http://www.ebay.co.uk/itm/like/131788249796
What HiFi gave them 5/5stars at £150 (albeit nearly 10 years ago): http://www.whathifi.com/goldring/ns-...celling/review
The battery that powers the noise-cancelling circuit lasts for ages.
I never tested them directly against more expensive ones but I never felt the need to either on music quality or noise-cancelling.