VRS4650 - Mechanics of the standard retail schemes: Mixture of methods of setting ESPs

We will normally expect only one method of setting ESPs to be used by a retailer, but recognise that a mixture of methods may be acceptable provided:

1. the same mix of methods is used consistently
2. the conditions in Notice 727/5 Retail schemes: How to work the direct calculation schemes are satisfied and
3. the overall result is fair and reasonable.