Complex sentence: Withdrawals of the class took ten years with the last loco being No.420 working at Tyne Dock, it was condemned on the 22nd of April and the class slipped in to history with non being preserved.
Split into simpler sentences: Withdrawals of the class took ten years with the last loco being No.420 working at Tyne Dock. It was condemned on the 22nd of April and the class slipped in to history with none being preserved.