How much does it cost to call an 0872 number on Vodafone?

From July 2015 changes were made by Ofcom to the way customers were charged for calling 0872 numbers. The changes were made as a way to make it clearer to the consumers.
The cost of calling these nunbers was split into two parts.

The access charge
This is the cost of connecting your call to the network, charged in pence per minute.
The service charge
This is the remaining cost of the call and is decided by the organisation you call. This cost must be clearly communicated to the customer and described as following: “Calls cost 20p a minute, plus your phone company’s access charge”.

0872 number call costs will typically be anywhere from 8p to 68p per minute, plus up to an additional 13p per-call charge.

The changes vary depending on the line being used to dial from and to.