"Relevant legislation: Section 36 of the Children and Families Act 2014
The following people have a specific right to ask a local authority to conduct an education, health and care needs assessment for a child or young person aged between 0 and 25:
• the child’s parent
• a young person over the age of 16 but under the age of 25, and
• a person acting on behalf of a school or post-16 institution (this should ideally be with the knowledge and agreement of the parent or young person where possible)
9.9 In addition, anyone else can bring a child or young person who has (or may have) SEN to the attention of the local authority, particularly where they think an EHC needs assessment may be necessary.
Relevant legislation: Section 36 of the Children and Families Act 2014 and Regulations 3, 4, and 5 of the SEND Regulations 2014
9.11 Following a request for an EHC needs assessment, or the child or young person having otherwise been brought to its attention, the local authority must determine whether an EHC needs assessment is necessary. The local authority must make a decision and communicate the decision to the child’s parent or to the young person within 6 weeks of receiving the request. The local authority does not have to consider whether an EHC needs assessment is necessary where it has already undertaken an EHC needs assessment for the child or young person during the previous six months, although the local authority may choose to do so if it thinks it is appropriate." Pages 143 and 144 of the SEN Code.
Because there is an absolute duty to consider an assessment of any child who is brought to the attention of the Authority, even if you had written "give little guggenheim an EHCP Now, from guggenheim." on a piece of paper and sent it to the the LA, they would have a duty to decide whether 'little guggenheim' needed an assessment. They can't just decline on the basis that you didn't ask nicely, or didn't full in their pretty form, or didn't ask in the right way. The law is the law, and it says anyone can bring any child to the LA's attention, and once they have done so, the LA must consider whether that cold should have an assessment for an EHCP.