Can anyone give me any advice on getting backlinks?
In particular, article submission. Which sites should I be submitting articles to in order to get backlinks?
Squidoo, seems to be for USA market. Is there one for the UK market?
IMHO you should start out getting links on your main site. Use a second 'practice' site, until you're confident you know what you're doing.
Focus on submitting your articles to a site where your customers hang out - focus on getting prospects to visit your site rather than any SERPs benefit.
Note that you'll rarely get a link by asking. Think of yourself as a budding journalist, just out of journalism school wanting a job at the NY Times - it ain't gonna happen! You have to start out at a provincial paper, show off your stuff, while attempting to get the attention of a NY Times editor.
So you make contact with someone you want to publish your articles with by commenting on their blog (intelligent comments, of course - you want to impress them with your knowledge of the subject) or contacting them through their contact page. Don't try and drop a link initially. Once you've got their attention you could point them to an article on your site that relates to something they've published. Sometimes they'll post something on their blog with a link to your article without asking. Eventually, you might start offering an article to be posted as a guest author.
Long winded and time consuming - yes!
There's also
myblogguest.com but understand that G may decide to penalise anyone using such directories at some point in the future.
There are plenty of UK Squidoo lenses, however I'm pretty sure any links are no-follow, so will have little effect on your SERPs position. They're also prone to being deleted without notice by the moderators, if they're considered 'too commercial'. You'll have to promote the lens within the Squidoo community, as the lenses don't do that well in the SERPs.
Making videos might be easier...
