**TL;DR**

You don't *have* to do anything, but if you ignore it, you'll automatically switch to a more expensive tariff. Here's the choice:

- **Do nothing by 28 Nov 2026** → You auto-move to the **Standard Variable tariff**: 34.1p/kWh + 61.2p/day standing charge (up from your current 24.6p/kWh).
- **Want to keep a fixed price?** → Log into your online account or app and select **Fixed Saver 27** before 28 Nov 2026.
- **If you're happy with the variable tariff** or don't mind the switch, you can safely ignore it.

The email notes "there's nothing else you need to do," but practically, the only way to avoid a higher bill is to pick Fixed Saver 27 beforehand.