Save £146 cashback by redemption.
£120 for 12 months with cashback from mobiles.co.uk.
Possibly £105/£104.25 for 12 months with Quidco/TCB cashback.
Looking at the vodafone website, it looks like this tariff includes:
20GB Red Value Bundle
Vodafone 3-in-1 SIM 12 month agreement
20GB 4G UK Data
Unlimited UK minutes
Unlimited UK texts
4GB inclusive roaming data
Unlimited inclusive roaming minutes and texts
Your choice of entertainment for 12 months: