For capillary matting you could try http://www.lbsgardenwarehouse.co.uk/

BIG roll :-)

Did you bother to read it?
http://www.lbsgardenwarehouse.co.uk/...atting-PRDCML/

Lantor Indoor Capillary Mat - 60cm (24") wide per metre

No, missed that :-) but in my defence the thread was all about
covering the capillary matting with Micro Perforated Polythene to
prevent the matting drying out , the link
http://www.lbsgardenwarehouse.co.uk/...ene-PRDR-12PB/
seemed more relevant