Personal Protection Officers are officers

Police officer

A police officer is a warranted employee of a police force...

 of the London

London

London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

 Metropolitan Police

Metropolitan police

Metropolitan Police is a generic title for the municipal police force for a major metropolitan area, and it may be part of the official title of the force...

 Royalty and Diplomatic Protection Department who are assigned for the personal protection of members of the Royal Family

Royal family

A royal family is the extended family of a king or queen regnant. The term imperial family appropriately describes the extended family of an emperor or empress, while the terms "ducal family", "grand ducal family" or "princely family" are more appropriate to describe the relatives of a reigning...

. The senior officer is the Queen's Police Officer. It is not revealed which members of the family have 24-hour protection, but they are generally understood to include (at least) : The Queen and The Duke of Edinburgh

Prince Philip, Duke of Edinburgh

Prince Philip, Duke of Edinburgh is the husband of Elizabeth II. He is the United Kingdom's longest-serving consort and the oldest serving spouse of a reigning British monarch....

; The Prince of Wales

Charles, Prince of Wales

Prince Charles, Prince of Wales is the heir apparent and eldest son of Queen Elizabeth II and Prince Philip, Duke of Edinburgh. Since 1958 his major title has been His Royal Highness The Prince of Wales. In Scotland he is additionally known as The Duke of Rothesay...

 and The Duchess of Cornwall; The Duke and Duchess of Cambridge; Prince Harry

Prince Harry of Wales

Prince Henry of Wales , commonly known as Prince Harry, is the younger son of Charles, Prince of Wales and the late Diana, Princess of Wales, and fourth grandchild of Queen Elizabeth II and Prince Philip, Duke of Edinburgh...

; The Duke of York

Prince Andrew, Duke of York

Prince Andrew, Duke of York KG GCVO , is the second son, and third child of Queen Elizabeth II and Prince Philip, Duke of Edinburgh...

; Princess Beatrice

Princess Beatrice of York

Princess Beatrice of York is the elder daughter of Prince Andrew, Duke of York, and Sarah, Duchess of York...

; Princess Eugenie

Princess Eugenie of York

Princess Eugenie of York Eugenie Victoria Helena; born 23 March 1990) is the younger daughter of Prince Andrew, Duke of York, and Sarah, Duchess of York...

; The Earl

Prince Edward, Earl of Wessex

Prince Edward, Earl of Wessex KG GCVO is the third son and fourth child of Elizabeth II and The Duke of Edinburgh...

 and Countess of Wessex and The Princess Royal

Anne, Princess Royal

Princess Anne, Princess Royal , is the only daughter of Elizabeth II and Prince Philip, Duke of Edinburgh...

.

In Texas, a Personal Protection Officer (PPO) is a person licensed by the Private Security Bureau to serve as a bodyguard. In order to become a Personal Protection Officer, one must first already be a Level III Commissioned Security Officer (licensed to carry a firearm in the performance of security duties) and also undergo additional training. The Level IV Personal Protection Officer rating entitles the holder to carry a concealed weapon while performing security duties, in other words, to be armed while working plainclothes. http://www.txdps.state.tx.us/psb/