I'd buy this on special for £65:
https://www.amazon.co.uk/Nilfisk-Pr...9Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=
Add a nozzle:
https://www.amazon.co.uk/Nilfisk-Au...ilfisk+car+nozzle&qid=1567408957&s=diy&sr=1-3
And add a foam bottle with foam included and your all good to go for not much more:
https://www.amazon.co.uk/Lance-Nilf...55&hvtargid=pla-349544431669&psc=1&th=1&psc=1
https://www.amazon.co.uk/Nilfisk-Pr...9Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=
Add a nozzle:
https://www.amazon.co.uk/Nilfisk-Au...ilfisk+car+nozzle&qid=1567408957&s=diy&sr=1-3
And add a foam bottle with foam included and your all good to go for not much more:
https://www.amazon.co.uk/Lance-Nilf...55&hvtargid=pla-349544431669&psc=1&th=1&psc=1