Complex sentence: Thomas met Nolan while they were both students studying English literature at University College London, and she worked as a script supervisor on many projects throughout the 1980s and 1990s, and was an assistant to director Stephen Frears on "High Fidelity".
Split into simpler sentences: Thomas met Nolan while they were both students studying English literature at University College London. She worked as a script supervisor on many projects throughout the 1980s and 1990s, and was an assistant to director Stephen Frears on "High Fidelity".