Remembering Her Majesty Queen Elizabeth II on her birthday today. It was an honour and privilege to have painted her portrait from sittings at Buckingham Palace, 1989-1992.

My mentor, Sir Gerald Kelly, was born #OnThisDay in 1879. One of his greatest works is the State Portrait of HM George VI.

Sir Anthony van Dyck was born on this day in Antwerp 1599. His stunning self portrait is in the collection of National Portrait Gallery

Sendng His Majesty all good wishes for a full and speedy recovery.

Wishing HRH The Duchess of Edinburgh a very happy birthday. My oil sketch was painted from sittings at Bagshot Park as preparatory work for an official portrait commissioned by Queen Alexandra's Royal Army Nursing Corps.

Wishing His Majesty The King a very happy birthday.

Remembering with affection and gratitude.

Wishing HRH Prince Richard, Duke of Gloucester a very happy birthday. This oil sketch was painted at Kensington Palace for a full-size portrait, commissioned by the Royal Army Medical Corps.

I remember Princess Margaret today on what would have been her 93rd birthday. These two small sketches were done as prep work for a portrait commissioned by The Royal Anglian Regiment.

Wishing HRH The Princess Royal a very happy birthday today. This little oil sketch was a preparatory work for a full size portrait, commissioned by the Royal Army Veterinary Corps. Sittings took place at Buckingham Palace.

Remembering the much loved Queen Mother, who was born #OnThisDay 4 August, 1900. My portrait of Her Majesty was painted at Clarence House in 1986.

Remembering my amazing friend Koko on what would have been her 52nd birthday. It was a privilege to paint her portrait and have the opportunity to get to know her. A life-changing and unforgettable experience. Gorilla Foundation

Today marks what would have been Beth Chatto's 100th birthday. I painted the portrait in her garden amongst her beloved hostas in 1990. She will be remembered as one of Britain's greatest gardeners. Beth Chatto’s Plants & Gardens

Remembering my mentor Sir Gerald Kelly on #InternationalPortraitDay His portrait of Ralph Vaughan Williams is magnificent. Royal College of Music

The late Prince Philip was born 102 years ago today. This drawing was completed from a sitting at Buckingham Palace in 2001.

In remembrance. I have learned today that Lord Carswell passed away on 4 May. His portrait was painted by me at his home in 1984. A lovely man whose company I greatly enjoyed.

With the Coronation today of Their Majesties King Charles III and Queen Camilla, we celebrate a significant milestone in the Nation's history. God Save The King!!

Remembering Her Late Majesty Queen Elizabeth II, who was born #OnThisDay in 1926. It was a great honour and privilege to have painted her portrait.

Leonardo da Vinci was born #OnThisDay in 1452. One of the greatest artists of all time. In my youth I would sit for hours National Gallery London, mesmerised by this work.

The Isle of Man Post Office issues a set of stamps today to celebrate the Accession of His Majesty King Charles III. I am honoured that my 2009 portrait, painted for the Goldsmiths' Company, has been chosen as part of the set. Isle of Man Post Office