Christmas SIM only offers

The strongest festive SIM only offers usually start appearing during the Black Friday and Cyber Monday week in late November and continue through to the January sales.

Because most SIM only plans run on a 30-day or 12-month basis, there's little downside to switching the moment a good seasonal price lands — you're not locking yourself into an expensive handset contract.

Many seasonal offers are real, with networks cutting monthly prices or boosting data allowances over the festive period to win new customers.

Always compare the headline price against the network's standard tariff, and check whether the discount lasts the full contract or only applies for a few introductory months before reverting to a higher rate.