Here's the link for Harrison's Trim Supplies:
http://www.harrisonstrimsupplies.co.uk/They sell the Veltrim and the Easyliner as well as Trimfix spray adhesive. Easyliner is supposed to be the easier of the two for a DIYer, Veltrim is the Pro's choice.
John Harrison is unbelievably generous with advice, so if you have any queires, phone and ask - he will happily tell you everything you need to know.
These are the type of Stanley knife blades I'm on about:
http://www.ebay.co.uk/itm/50-X-STANLEY- ... nQemNfwEVgThey are far better than the normal straight edge blades for carpet use.
As mistericeman says, the carpet is quite abrasive when being cut - it will quickly blunt blades, so swap blades as soon as it stops slicing through the carpet and starts tearing it instead.
2011 SWB medium roof 2.2l Mk7 115 T300 in Frozen White. Stealth Camper converted.
"It's better to burn out, 'cause rust never sleeps..."