Black Friday SIM only deals

Black Friday falls on the last Friday of November, but networks typically start releasing SIM only offers in the weeks beforehand and run them through to Cyber Monday.

It's worth checking back regularly in November, as the best data-for-the-money deals can appear early and sell out or change quickly.

Black Friday often brings bigger data allowances for the same price or temporary discounts on monthly plans, so it can be a great time to lock in value.

To be sure you're getting a real saving, compare the headline offer against the everyday price for the same allowance, and watch out for any annual mid-contract price rises in the terms.