Complex sentence: The company was floated on the London Stock Exchange on 21 July 2010 and is currently a member of the FTSE 250 Index, with headquarters just outside London in Hatfield, Hertfordshire.
Split into simpler sentences: The company was floated on the London Stock Exchange on 21 July 2010 and is currently a member of the FTSE 250 Index. It has its headquarters just outside London in Hatfield, Hertfordshire.