Peter Lowndes was born in 1948 and educated at Eton. He is a Fellow of the Royal Institution of Chartered Surveyors (RICS).
He served as a Deputy Grand Director of Ceremonies from 1984 until 1986, and was subsequently appointed Grand Director of Ceremonies in 1995, serving until 2003.
On 10 March 2004, Peter Lowndes was installed as Deputy Grand Master, continuing until his appointment as Pro Grand Master on 11 March 2009.
When the Grand Master is a Prince of the Blood Royal - a member of the Royal Family - he may appoint a Pro Grand Master to be his principal adviser, and to act for him on those occasions when, due to royal engagements, he is unable to be present.