Exercise by 18:30 on the Last Trading Day only.
The interval between Exercise Prices is determined by the lifetime
of the expiry month, and its proximity to the at-the-money strike.
The Exercise Prices may be in intervals of 25, 50, 100 or 200 index
A price established on the trading day will used as the reference
to determine the introduction of additional series on the next
trading day in order to list the minimum number of series as
determined by the strike introduction policy. Minimum
Strike Price Intervals for FTSE 100 Index Options