When the Government adopted the Convention it decided to opt out of parts of it:
Work and Employment - Convention Article 27 mainly The United Kingdom accepts the provisions of the Convention, subject to the understanding that none of its obligations relating to equal treatment in employment and occupation, shall apply to the admission into or service in any of the naval, military or air forces of the Crown.
Education - Convention Article 24 Clause 2 (a) and 2 (b) The United Kingdom reserves the right for disabled children to be educated outside their local community where more appropriate education provision is available elsewhere. Nevertheless, parents of disabled children have the same opportunity as other parents to state a preference for the school at which they wish their child to be educated.
Liberty of Movement -The United Kingdom reserves the right to apply such legislation, insofar as it relates to the entry into, stay in and departure from the United Kingdom of those who do not have the right under the law of the United Kingdom to enter and remain in the United Kingdom, as it may deem necessary from time to time.
Equal Recognition Before the Law - Convention Article 12.4 The United Kingdom's arrangements, whereby the Secretary of State may appoint a person to exercise rights in relation to social security claims and payments on behalf of an individual who is for the time being unable to act, are not at present subject to the safeguard of regular review, as required by Article 12.4 of the Convention and the UK reserves the right to apply those arrangements. The UK is therefore working towards a proportionate system of review.”
Education - Convention Article 24 Clause 2 (a) and (b) The United Kingdom Government is committed to continuing to develop an inclusive system where parents of disabled children have increasing access to mainstream schools and staff, which have the capacity to meet the needs of disabled children. The General Education System in the United Kingdom includes mainstream, and special schools, which the UK Government understands is allowed under the Convention.”
If you want to learn more about the Convention you can: