Dealing with lumberjack visits

[Polar Bear]

I simply googled toilet cistern with integrated basin and got lots of results.  There appears to be a number available here in the UK.

[spesh]

I'd quite like a grey water system for flushing the bog as that would solve some issues of wastage of potable water.

This, muchly so.

Mrs E was impressed by the Japanese idea of a wash basin incorporated in the top of a cistern so that washing water is saved for the next flush. So much so that she wants one for her studio toilet. Unfortunately she has met with blank incomprehension and denials that such a thing exists. Does anyone here have any knowledge of availability?

Forget the standard DIY sheds, try a specialist - you can find a variety of toilet/basin combos at these two sites for a start:

https://www.victorianplumbing.co.uk/toilets/cloakroom-toilet

https://www.bellabathrooms.co.uk/bathroom-suites/cloakroom-suites.html

Google search