Waste oil burner/heater/boiler

[Andyjc86]

Does anyone know the rules and regs for using these in a house? They are quiet common in workshops, so I was wondering if you could use one instead of a fire in a house?

Or how about one that could heat water to supply the central heating, possible?

I can't really find anything about domestic stuff in the UK on google, it all seems to be American.

The oil I want to burn by the way is used engine oil, if it makes a difference?