This A4 Royal Mail advertising poster was designed and issued to post offices in 1990. Featuring the colourful and eye-catching design of "A Capital Idea", the poster celebrates the diversity and vibrancy of London as the capital city of the United Kingdom. The poster is a unique piece of British history from the reign of Queen Elizabeth II (1952-2022) and is perfect for collectors of stamps and Great Britain memorabilia. Despite being used, the poster is in good condition and would make an excellent addition to any collection.