The Greater London Authority -LRB- GLA -RRB- is the top-tier administrative body for Greater London, England.
The Greater London Authority -LRB- GLA -RRB- control the 1579 kmÂ -LRB- 610 sq. miles -RRB- of Greater London, England, covering the 32 London boroughs and the City of London. The GLA consists of an elected Mayor and the 25 members of the London Assembly.