For factors pre-dating those provided above, please refer to the historic guidance section of the relevant factor type (see Guidance list above) – factors were contained within guidance historically.
Please note that the implementation dates vary for different factor types and will not be the same as the Date of Issue of the consolidated factor workbook (or historic guidance note, where relevant). GAD has included information on the implementation date of factors in the consolidated factor workbook (or historic guidance note where relevant) where known. Please refer to the sponsoring department / responsible authority if the implementation date cannot be found.
