The live streaming trades column is shown in time order ascending, with the most recent trades declared through the LSE on the top line. For example, the first column shows the price the stock was traded at (517.25).
The second column shows that the trade involved a volume of 8,345 shares.
The third column displays the trade code showing the type of trade that was made (@ = buy; O = Sell).
Whilst the fourth column tells us that the trade took place at 14:31:07. The most recently listed trade will set the current price of the stock in question.