25 North Colonnade is a commercial building in Canary Wharf, London formerly occupied by the Financial Conduct Authority, after having been solely occupied by its predecessor, the Financial Services Authority (FSA) until early 2013. It is 80 metres (262 ft) tall, with 15 floors. Built in 1991, developed by architect John McAslan + Partners. 

This project was developed to revitalize a 1990s office building, one of the first to be built In the Canary Wharf region. Gensler’s design elevates the commercial office building to new prominence creating a new destination for employees, tourists and residents alike.  In addition, office floors will be upgraded to a high-quality contemporary offering with an additional southside reception and new rooftop terrace facility.

In this project Effisus Vapour FR Class A2 system was used to prevent the condensation risk, improving the airtightness and consequently the energy efficiency of the building, applying an A1 Vapour FR membrane.