Hard on the heels of last week's GBP 1.7 million purchase by Michael Spencer of nearly 3.4 million shares in mobile technology company Probability comes news that the respected founder of ICAP and City Index has gone back for a second bite at the cherry.

The savvy City businessman has increased the holding of his IPCL company in Probability by a further 400 000 shares placed on the market by Probability non-executive director John Scaife.