Summoned to the headmaster's study - No. 10 Trinity Square

After the disaster in Turkey where Mi6 loses not only an agent but also the secret hard drive, M is summoned to the new chairman of the intelligence and security committee, Gareth Mallory. Mallory is planning M's early retirement and tells her she will be awarded a GCMG when she leaves. We get the impression that Mallory's office is located somewhere around Whitehall, but in fact, the action takes place in another part of town, very close to the Tower of London.

The building is in fact No. 10 Trinity Square, a building that formerly housed the Port of London Authority. It was also the European headquarters of insurance broker Willis Faber Ltd for some time during the late 1900's. Apparently, the building is about to be developed into hotel with over 40 private residences under the Four Seasons Hotels and Resorts brand, known as Four Seasons Hotel London at Ten Trinity Square. The hotel was due to open in 2014 but is apparently not yet up and running to my knowledge.

Despite being badly damaged during the Blitz, Trinity Square hosted the inaugural meeting of the General Assembly of the United Nations in 1946. M and Tanner arrive from the street Savage Gardens and park in front of the building.

The building is a fairly late construction. It was built in 1922 after a design by Sir Edwin Cooper. It is facing Trinity Square Gardens and has a view over the Tower of London as well as the River Thames.

The GCMG that Mallory offers to M is an Order of chivalry, founded in 1818, by George the Prince Regent. It is awarded to men and women who render extraordinary or important non-military service in a foreign country. It is named in honour after two military saints, St Michael and St George. M is offered the highest class of the Order, namely Dame Grand Cross of St Michael and St George (GCMG). Bond himself is a Companion of the Order, which is the lowest of the three classes (CMG).

M, reluctant to retire from her position, leaves the Mallory's office and heads back to Mi6, only to watch it blow up from Vauxhall Bridge.