Continuing process of updating company classifications.

Sixty constituents deleted during 1991—more as a result of casualty rule than those taken over.

Only forty eight replaced—reflecting difficulty in finding suitable new non-industrial constituents.

No end of the year group changes at the end of the year—for the first time since end-1988.

Continuing process of updating company classifications.

Ninety-six constituents deleted during 1990—many as a result of strengthened casualty rule. Only 74 replaced—reflecting difficulty in finding suitable new non-industrial constituents.

Agencies, Overseas Traders and Publishing & Printing groups discontinued at the end of the year, but Business Services, Electricity and Media introduced. Leisure renamed Hotels & Leisure.

The process of updating company classifications continued.

Seventy Index constituents were replaced during 1989, mostly as a result of takeovers, not quite a record. Only 46 replaced them, reflecting the difficulty in finding suitable new non-industrial constituents. The Mining Finance group was discontinued, but Engineering–Aerospace and Water were introduced. Shipping & Transport was renamed Transport.