Two different textbook definition of the meaning of London as a global city and headquarters of major global corporations and investments. 

Quantitative source data of comparable nature on London's hosting of HQs compared to other global cities

  Quantitative source data on the home destinations of HQ's investments in London. 

 Comparable quantitative source data on two industries/sectors of HQ investments in London.

  Point out why global organizations overwhelmingly favor London as an HQ base. 

Identify the impact of HQs presence in London.

  Describe any potential concerns impacting London's role as the principal HQ host city.