Complex sentence: John Innes who had made his money in the City of London had established a horticultural research centre in Merton Park (now located in Norwich), had seen the development of other garden suburbs (particularly Bedford Park in Chiswick) and wished to reproduce the same.
Split into simpler sentences: John Innes who had made his money in the City of London established a horticultural research centre in Merton Park (now located in Norwich). He had seen the development of other garden suburbs (particularly Bedford Park in Chiswick) and wished to reproduce the same.