Complex sentence: Owen Robert Spencer-Thomas MBE is perhaps best known as a television and radio news journalist over three decades, but he has also undertaken a wide range of philanthropric work as volunteer charity fundraiser, pioneer and campaigner for people with autism and other disabilities.
Split into simpler sentences: Owen Robert Spencer-Thomas MBE is probably best known as a television and radio news journalist for over three decades. However, he has also undertaken a wide range of philanthropric work as volunteer charity fundraiser, pioneer and campaigner for people with autism and other disabilities.