I appreciate all the input. I realise it's not a perfect project but I haven't damaged anything other than the concrete up until now. I also accept that temporarily dumping some of the rubble on soil was not ideal. But to be honest, other than a pathway, I believe the rest of the existing patio is going to be full of rubble when I've broken the remainder up and transferred what I've already broken of the sub base. So in some ways it was unavoidable unless we'd hired a skip or probably 8 rubble bags and carted the rubble out to the front to them. We also may have had some difficulty transferring the rubble from a barrow into the skip. We don't have any long timbers handy to build a ramp and I'd imagine you have to be careful as beginners doing that anyway in case you go too far or hurt your back pushing it up?