not much info around on headlight washers. not much on ebay either. again could try citroen/ peugeot, check price with renault too.
or try a breakers yard if you got one close. dunno where you are but i go to a1 spares wokingham if i need anything. not been there for the clio yet mind. with the knowledge that PSA (pug & citroen) share the parts with renault you'll have a plethora of cars to choose from.
GSF list windscreen washer pump for £9.75+vat as an option, but can't find anything for headlight washer