The Scottish Wildlife Trust is like one of England and Wales's county wildlife trusts, but they cover the whole of Scotland. The trust is very keen on promoting wildlife gardening.
The website is nicely designed and implemented, and includes a section on wildlife gardening (http://www.swt.org.uk/what_we_do/urban/wildlifegard.asp
) with a useful two page PDF leaflet on wildlife gardening.
The website also includes information on the Trust's 'Jupiter Urban Wildlife Centre'; described as 'Scotland's largest wildlife garden'. The Jupiter Centre is an urban wildlife oasis created from 10 acres of derelict railway marshalling yard.