Switched to Octopus about 4 weeks ago, via a referral with a £50 intro credit. Last Friday I applied to switch onto their daily Tracker Tariff. Email from them saying will take up to two weeks, checked both my online account and the tariff section within the account tab of the ihd and the Tracker was up and running almost immediately. Hopefully it performs like the last 14 months or so, in which case we could save about £700 over a year. During the past month the daily prices on the Tracker have ranged between 10p - 19p per kwh for Electric and 3p - 4.5p for gas.