The National Health Service (General Medical Services) Regulations 1992

1.  The services referred to in regulation 28(2)(a) shall comprise—

(a) the monitoring—

(i) by the consideration of information concerning the child received by or on behalf of the doctor, and

(ii) on any occasion when the child is examined or observed by or on behalf of the doctor (whether pursuant to sub-paragraph (b) or otherwise),

of the health, well-being and physical, mental and social development (all of which characteristics are referred to in this Schedule as “development”) of the child while under the age of 5 years with a view to detecting any deviations from normal development;

(b) the examination of the child by or on behalf of the doctor on so many occasions and at such intervals as shall have been agreed between the FHSA and the health authority in whose district the child resides (in this Schedule called “the relevant health authority”) for the purposes of the provision of child health surveillance services generally in that district.