original: It was also on the London Sunday Times best-seller list for more than four years.
simplifications: For over four years iy was on the London Sunday Times best-seller list. It was on the London Sunday Times best-seller list for more than four years. It was on the London Sunday Times best-seller list for 4+ years. It remained on the London Sunday Times best-seller list for more than four years. It was also on the London Sunday Times best-seller list for over four years. It was also on the London Sunday Times best-seller list for over four years. It remained on the best seller list of the London Sunday Times for over four years. It stayed on the London Sunday Times best-seller list for over four years. For over four years it made the London Sunday Times best-seller list. It was also on the London Sunday Times successful list for more than four years.