Well done Richy.
Is the card significant - that depends on where you want your work to come from. Most on here don't worry or need a CSCS card because they will never work on a construction site.
If you work on construction you should be asked for it every time you go onto a new site. On the works I do it is photocopied with my IPAF license and if I don't have it I don't get on site.
I have been on about 5 construction sites in the last two weeks, York, Colne, Balham and Basingstoke and another one I can't remember right now. Every time I was asked for the card.
Rob 
cheers rob giza shout now if u need a hand wouldnt mind cumin along to see what these works of urz are about!!