I'm absolutely useless with this sort of stuff, but my current tariff with Scottish Power is:
Electric: 33.83p per unit, standing charge 49.14p.
Gas: 10.334p per unit, standing charge 28.48p.
The Octopus tracker tariff is:
Gas: 6.85p (& has been sub 7p for the last week), standing charge is 26.84p.
Electric: 22.91p per unit (hasn't been above 33p all month, and only above 30p once in the last month), standing charge is 47.5p.
I'd be absolutely insane not to change, wouldn't I? I looked at my bill for Scottish Power from the last three months. Was £850 & the house was never above 18 degrees. Piss take.