If you are looking for a 5G SIM plan though, there's also this equally incredible offer from Vodafone (also via Mobiles.co.uk) with unlimited data for £16.86 per month. Speeds are restricted to 10Mbps though.

Head to Mobiles to see its Black Friday SIM offers. For other SIM only deals, see our dedicated round up. We're also rounding up the best Black Friday and Cyber Monday deals separately, so be sure to check that out too.