Complex sentence: However, at the time "Top Gear" presenter James May claimed that the Stig's identity had not been outed and there has been speculation that there may be more than one person who plays the Stig.
Split into simpler sentences: However, at the time "Top Gear" presenter James May claimed that the Stig's identity had not been outed. There had been speculation that there may have been more than one person who plays the Stig.