Immigration and nationality covers a range of matters, including: entry to the UK; the granting of political or other forms of asylum; the status and capacity in the UK of non-British citizens, the grant of work permits and their regulation; free movement of persons within the European Economic Area; and the issue of passports and other travel documents.
Immigration control is now largely a matter of statute, the principal controlling statute being the Immigration Act 1971 (which has been amended by a number of subsequent Immigration Acts) together with the British Nationality Act 1981 and the Immigration (Carriers’ Liability) Act 1987.  Passports and other travel documents are not subject to statutory provision, but are issued under the Royal Prerogative.
TABLE OF RESERVED MATTERS Head B - Home Affairs General