London is the capital of grb

References:

1. 
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2. 
   Number 1 Poultry (ONE 94), Museum of London Archaeology, 2013. Archaeology Data Service, The University of York.
   
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   "London weather map". The Met Office. Archived from the original on 3 August 2018. Retrieved 26 August 2018.
   
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   "2011 Census – Built-up areas". ONS. Retrieved 15 October 2022.
   
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   "Major agglomerations of the world". CityPopulation.de. Retrieved 20 April 2023.
   
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   Fenton, Trevor. "Regional economic activity by gross domestic product, UK: 1998 to 2020". ons.gov.uk.
   
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   "The Greater London Authority Consolidated Budget and Component Budgets for 2021–22" (PDF).
   
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   Sub-national HDI. "Area Database – Global Data Lab". hdi.globaldatalab.org.
   
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   "Roman London". Museum of London. n.d. Archived from the original on 22 March 2008.
   
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    Fowler, Joshua (5 July 2013). "London Government Act: Essex, Kent, Surrey and Middlesex 50 years on". BBC News.