Hi, Sam,
maddzz:would anyone be able to suggest some accredited courses i could go on in London?
have you noticed the new I Love Design portal?
Beside video interviews and later uploading your designs there, you can also find training providers there:
http://www.ilovedesign.com/uk/quarkxpress/training-partners/
Use the country/city selector at the left side to filter for specific areas.
Hope that helps.
Thanks
Matthias