Complex sentence: The office was abolished in 1965, with the creation of Greater London and the post of Lord Lieutenant of Greater London, with small parts of Middlesex coming under the jurisdiction of the Lord Lieutenant of Surrey, the Lord Lieutenant of Hertfordshire.
Split into simpler sentences: The office was abolished in 1965, with the creation of Greater London and the post of Lord Lieutenant of Greater London. Small parts of Middlesex came under the jurisdiction of the Lord Lieutenant of Surrey, the Lord Lieutenant of Hertfordshire.