Singpost issued the above miniature sheet in conjunction with participation in the London 2010 International Stamp Exhibition (8-15 May 2010) : an event that only comes to Britain every ten years.
The Exhibition itself is the centrepiece of the London 2010 Festival of Stamps, an exciting year-long programme of exhibitions, activities and events which have "Accession of George V – The Philatelist King" as its central theme.
6 May 2010 marked the centenary of the King's accession, as well as the 170th anniversary of the first Penny Black.
The miniature sheet above was cancelled on the first day of exhibition (8 May) with postmark featuring Business Design Centre in Islington, London where London 2010 International Stamp Exhibition was held. Also, show below the exterior of Business Design Centre.