Vodafone's SIM is 5G compatible, and also includes global roaming across 77 countries. The deal was originally £36 per month, but the cashback offer reduces the price to the £20 rate. Find this Vodafone plan at Mobile.co.uk.

If you don't need that much data, there's a slightly cheaper option for £15 per month (after cashback), which similarly includes Spotify, Now TV, Amazon Prime Video, or Sky Sports for 12 or 24 months. Head to Mobiles.co.uk to see this deal right now.

For more cheap SIM deals, see our round up of the best SIM-only offers of the month across UK networks