Guidelines must be followed in all cases where a person has diplomatic immunity, claims diplomatic immunity or is presumed to hold diplomatic immunity. Prosecutors are reminded that investigative material obtained prior to the lifting will have no probative value and that a person with diplomatic immunity cannot waive his or her own immunity. Failure to comply with agreed protocols can have implications for the international diplomatic community. The definition of diplomatic premises is a building or part of the building and property used for mission purposes, regardless of ownership, including the home of the head of mission (VCDR 1961, Section 1, point i). However, if the police believe that there is sufficient evidence to warrant a trial against a person, but the head of mission concerned does not accept a waiver, the FCO may request the removal of the person and his family or declare him personae non gratae. Even if immunity is not waived, anyone else involved in the diplomatic offence can continue to be prosecuted. Criminal immunity and inviolability in the United Kingdom are granted to all qualified dependent members of diplomatic and administrative and technical staff of foreign diplomatic and consular representations in London. In order to benefit from this immunity and immunity, the creditor must be notified to and accepted by the FCO. Diplomatic and consular officers may not be UK nationals; and dependants of administrative and technical officers and consular staff may not be UK nationals or permanently reside in the United Kingdom. Criminal immunity is granted to service personnel of foreign, diplomatic or foreign consular representations, established in London, only with respect to acts performed in the course of their duties. However, these employees are not untouchable. The immunities granted to diplomatic personnel and their families are set by the Vienna Convention on Diplomatic Relations (VCDR), the Vienna Convention on Consular Relations (VCCR) of 1963 and the Consular Relations Act of 1968.
The relevant provisions of the agreements are applied in the United Kingdom by Section 2 of the Diplomatic Privileges Act 1964 (DPA 1964). Criminal immunity: Consular officers and consular employees who are accepted by the HMG and notified to the FCO have immunity for acts they perform in the performance of their consular duties. Dad-of-one Marvin said: “I was afraid that they would end up hiding behind diplomatic immunity. Although diplomatic premises in the United Kingdom are part of British territory, they are untouchable and cannot be penetrated without the consent of the ambassador or head of mission. (see DPA 1964, section 2, paragraph 1, and calendar 3). All offences committed in diplomatic premises in the United Kingdom are based on the ordinary principles of English law, subject to the principles of diplomatic immunity for those who have it. Those who do not have this status (regardless of nationality) can be prosecuted as usual, as was the case, for example, in the case of terrorists who occupied the Iranian Embassy in London in 1980. In accordance with Section 1 (1) of the Diplomatic and Consular Premises Act 1987, missions are required to obtain the approval of the Minister of Foreign Affairs so that the country can be considered a diplomatic or consular premises. For diplomats who are no longer in office, assistance can be drawn from the Case of the Supreme Court of Reyes v Al-Malki – Anor  UKSC 61.
It found that a former employee of the diplomatic staff in London and his wife were not entitled to diplomatic immunity from the complainant`s complaint (his domestic worker) against them, since the employment and ill-treatment of the complainant was not an act in the performance of the mission`s diplomatic duties contrary to Article 39. , paragraph 2, VCDR versto