Complex sentence: Luder attended The Haberdashers'Aske's Boys' School in Elstree and studied economics and economic history at University College London (BA) before working as a tax accountant for Arthur Andersen and later Grant Thornton.
Split into simpler sentences: Luder attended The Haberdashers'Aske's Boys' School, Elstree before reading Economics and Economic History at University College London (BA). He then worked as a tax accountant for Arthur Andersen and later Grant Thornton.