 In April 2007 staff were informed that the UK Immigration Service would henceforth cease to exist as a distinct body.UK Immigration Service grades are/were reflective of the legislation that stipulates that the decision to refuse a person leave to enter the United Kingdom is taken by an Immigration Officer only with the authority of a Chief Immigration Officer or an HM Immigration Inspector.The decision that a person inside the UK is in breach of immigration law and liable for administrative removal or deportation can be taken by an Immigration Officer or a caseworker of Executive Officer grade or above acting on behalf of the Secretary of State, with the authority of a Chief Immigration Officer or Higher Executive Officer.