1.   Activity will be centred on the Febuary contract as the January contract expires today.

2.   Activities were generally centred on the short-term and medium term.

3.   By the time I got there, the main activity was centred on the talentine contest in the school hall.

4.   Given the shortened week, trading activities were centred on roll-over contracts, that is running a trading position into the next contract.

5.   Its business activities are centred around civil engineering, heavy industry, rail, building and asset management.