Getting Google to exclude certain sites from a search

Today I learnt how to get Google to exclude certain websites from my search.

The answer is the following search command:

-site:

For example if I wanted results on national insurance, but not from HMRC, I’d search for:

national insurance -site:hmrc.gov.uk

This, and other helpful internet search tips, from Karen Blakeman’s blog:

http://www.rba.co.uk/wordpress/2012/09/03/top-search-tips-from-north-wales/