r not more than six monthly intervals. 9.65. ASR 19 prescribes that where services are being reviewed, the procedure for assessment set out in ASR 14 and 15 must be followed in reviews as they are in a first assessment. 9.66. If the review results in the local authority proposing to vary or terminate the provision of support services, they must give the person concerned notice and allow them time to make representations in a similar way to the original assessment and notice of outcome. As with the original notification in ASR 17, the notice will need to be accompanied by a revised draft plan (if services are to be provided), and the final decision can only be made after considering any representations from the person affected within the time scale given in the notice. 9.67. The format and content of the review will vary depending on the circumstances of the case. Notification of changes of circumstances and any review of the provision of support services need not always necessitate direct contact between the local authority and the adoptive parent. Where the change of circumstances is relatively minor, the review might be limited to an exchange of correspondence. Where the change of circumstances is relevant only to one service, the review may be carried 183 out with reference only to that service. However, where the change of circumstances is substantial, for example, a major change in the behaviour of the child, it will be appropriate to conduct a new assessment of needs. Urgent cases: ASR 21 9.68. It is important that the assessment process and follow up does not delay provision where a person has an urgent need for a service. ASR 21 therefore provides that where any requirement under the ASR in relation to an assessment, preparing a plan or giving notice would delay