Renault Wolverhampton listed on E Bay, they have quite a few parts for sale. While browsing i came across these, £26.56 plus £3.60 postage. Considering NGK for 182s are £10+ each i didnt think these were a bad price for genuine plugs...... Just thought i'd post em up.
http://www.ebay.co.uk/itm/GENUINE-R...o|Cars+Type:2.0+16V+Sport&hash=item41613be032
http://www.ebay.co.uk/itm/GENUINE-R...o|Cars+Type:2.0+16V+Sport&hash=item41613be032
