Thanks to journalism.co.uk for pointing out cuttings.me a new site aimed at freelancers set up by Nicholas Holmes. The idea is you can post samples of work from your portfolio to advertise your skills.
Many journalists use their blogs for this purpose. But, as this new site offers a free service, there's no harm in trying it out.
I haven't explored it fully yet, but it might be worth a look and possibly setting up your own portfolio.