The FTSE 100 contains the UK's largest listed companies, and usually, one or more firm is relegated and replaced.

This time, no FTSE 100 member saw its market value fall below the leaders of the next index, the FTSE 250.

Yet there was one unconnected change to the FTSE 100 - P&O has been delisted after its sale to a Dubai firm.

P&O is being bought by Dubai Ports World for �3.9bn ($6.8bn).

Its place in the FTSE 100 goes to steel group Corus.

Photo booths

Although there will be no quarterly reshuffle to the FTSE 100, three firms are to join the FTSE 250.

These are investment business Dexion Absolute, JKX Oil & Gas, and power station operator Drax Group.

They are replacing Photo-Me International, drug delivery company SkyePharma, and laboratory supplies company Whatman.

The index reshuffles will come into effect at the close of business on Friday, 17 March.