Tall buildings in the UK 03

Citi Centre is the EMEA headquarters of financial services Citi, located in Canary Wharf. The centre provides for 170,000 sq m of floor space across two merged buildings - 33 Canada Square ("CGC1") and 25 Canada Square ("CGC2"), and houses the bulk of Citi's UK employee base.
CGC1 is the smaller of the two buildings, designed by Norman Foster and completed in 1999, two years before its neighbour. At 105 m tall, the building is made up of 18 floors, all of which are adjoined to their equivalent floors in CGC2. CGC1 is owned by Citigroup, and was built before the completion of the Jubilee Line extension in late 1999.
In contrast, CGC2 stands at 200 m and, alongside HSBC Tower (with which it was built in tandem), is joint second tallest building in the UK. Designed by Cesar Pelli & Associates, construction of the 45-storey tower began in 1998 and was completed in 2001, with Citigroup leasing the building from the outset. The building was bought by RBS in 2004 along with 5 Canada Square (leased to Bank of America) for $1.12 bn. Subsequently, in 2007, CGC2 was individually sold to a joint venture between Quinlan Private and PropInvest for £1 bn. Citigroup pay £46.5 m a year in rent for the tower, generating a yield of 4.6% to the owners.