Complex sentence: The Lambeth Waterworks Company, founded in 1785 to supply water to south and west London, established premises on the south bank of the River Thames close to the present site of Hungerford Bridge where the Royal Festival Hall now stands.
Split into simpler sentences: The Lambeth Waterworks Company was founded in 1785 to supply water to south and west London. It was established on the south bank of the River Thames close to the present site of Hungerford Bridge where the Royal Festival Hall now stands.