Sell
Email alerts
Websites with email alerts services
Cold call, cold email
Contact companies you are interested in (mint), google, ask for advice, send ideas
Networking
Informally: attending events where they sell, asking family and friends for advice (or for contacts), with colleagues or ex-colleagues
Meeting people you don't know through events, courses, etc.
Volunteering
Give something so that if they like it, they are happy to buy more (freemium)
https://gojobhero.com/ free CRM for job seekers
https://www.gumtree.com/
https://targetjobs.co.uk/
https://www.prospects.ac.uk/
https://jobs.theguardian.com/
http://www.fish4.co.uk/
https://www.monster.co.uk/
http://www.reed.co.uk/
http://www.indeed.co.uk/
https://www.cv-library.co.uk/jbe
http://www.workhound.co.uk/
http://www.simplyhired.co.uk/
http://www.alljobsuk.com/
http://bl-business-essentials.wikispaces.com/Online+networks
https://www.linkedin.com
https://www.cv-library.co.uk/
http://www.simplyhired.co.uk/
http://www.findnetworkingevents.com/
https://turbinehq.com/2013/find-networking-events/