When you changed your tariff, you’ll have been asked to either ‘Start today’ or ‘Start Later’

If you selected ‘Start today’ your tariff will be changed within five calendar days, which you’ll see in the ‘Overview’ of your online account. 

If your monthly bill is created between you selecting a new tariff and the five days of it starting, it won’t appear until your next monthly bill. 

If you selected ‘Start later’ it will automatically update at the end of your current tariff. In this case, you’ll see the different tariff rates within the gas and electricity statement portion of your bill as soon as your current tariff ends.