And where did he get this cash if he wasn’t ‘rich’ to begin with? As I’m pretty sure every man and his dog would do the exact same if they could.
He worked and saved hard for a few years and bought a repossession. He later sold it for profit and waited for a crash where he then bought 2 houses to rent out. I don't know the exact detail after that, but I'd guess another downturn allowed him to do the same again. It was much easier then. Today, unless you have a good few hundred grand in the bank, it can't be done. If you've got £1M and buy 4 houses for £250k each, you'll do very well for yourself.