Speech and language provision should be specified in Section F of the EHCP and by law, Local Authorities are required to secure the special educational provision specified in Section F.
Once you discover the provision is not being provided, you need to raise this with the Local Authority directly and immediately, in writing. It may also be worth meeting with the placement directly to find out why the provision has stopped. If you do not receive a response within 14 days, you need to consider escalating the matter to court action of Judicial Review. Parents and young people are strongly recommended to seek the assistance of a solicitor as soon as possible and before pursuing any action.