- https://my.tonikenergy.com/
- https://uk.trustpilot.com/review/tonikenergy.com
- https://www.theguardian.com/money/2017/dec/30/switching-energy-supplier-heres-what-you-can-save
- https://www.moneywise.co.uk/news/2017-08-04/want-to-escape-the-british-gas-price-rise-here-are-the-alternatives
- http://www.independent.co.uk/news/business/news/customer-service-energy-providers-npower-scottish-power-british-gas-zog-energy-bulb-octopus-a8128791.html
- https://uk.trustpilot.com/review/tonikenergy.com?languages=en&stars=5
- https://twitter.com/tonikenergy
- https://www.facebook.com/tonikenergy/
