The FTSE-All Share is a large Index that represents 639 Companies.
The 19 sector components that make up the index are:-
Oil & Gas 18 Companies with a market capitalisation of £272,642 Million 11.41% of the index
Chemicals 8 Companies with a market capitalisation of £14,749 Million 0.62% of the index
Basic Resources 22 Companies with a market capitalisation of £167,331 Million 7.00% of the index
Construction & Materials 16 Companies with a market capitalisation of £35,867 Million 1.50% of the index
Industrial Goods & Services 95 Companies with a market capitalisation of £231,185 Million 9.67% of the index
Automobiles & Parts 1 Company with a market capitalisation of £5,467 Million 0.23% of the index
Food & Beverage 15 Companies with a market capitalisation of £91,942 Million 3.85% of the index
Personal & Household Goods 26 Companies with a market capitalisation of £289,646 Million 12.12% of the index
Health Care 22 Companies with a market capitalisation of £202,368 Million 8.47% of the index
Retail 35 Companies with a market capitalisation of £72,998 Million 3.05% of the index
Media 22 Companies with a market capitalisation of £79,443 Million 3.32% of the index
Travel & Leisure 36 Companies with a market capitalisation of £108,052 Million 4.52% of the index
Telecommunications 6 Companies with a market capitalisation of £88,921 Million 3.72% of the index
Utilities 7 Companies with a market capitalisation of £75,035 Million 3.14% of the index
Banks 11 Companies with a market capitalisation of £265,625 Million 11.11% of the index
Insurance 19 Companies with a market capitalisation of £130,918 Million 5.48% of the index
Real Estate 53 Companies with a market capitalisation of £59,442 Million 2.49% of the index
Financial Services 211 Companies with a market capitalisation of £177,522 Million 7.43% of the index
Technology 16 Companies 20 with a market capitalisation of £20,712 Million 0.87% of the index
Totals 639 Companies with the total value of £2,389,866 Million making 100.00% of the index.
That is £2.389 Trillion