Yes, new Vodafone at Home customers are eligible for a discount
If you are an existing Vodafone mobile customer on a bill pay price plan, you are eligible for a loyalty discount on Vodafone at Home. Just be sure to mention this when you sign up. Please note that the discount only applies to Home Phone and Broadband bundles (not applicable to Voice Only or Broadband Only tariffs.)
If you sign up online, you will have an opportunity to identify yourself as an existing customer during the order process.
Note: If you cease your bill pay mobile service (for example, if you switch operators, or move to a pay as you go service) then you will no longer receive the loyalty discount for Vodafone At Home, and you will be charged at standard rates for your service. See Vodafone terms & conditions.