My mum says that the quickest way to do washing up (without a dishwasher) is to scrub all the dishes, and then wash them all in one go. i said that it would be quicker to scrub and wash each individual plate. who was right?
get someone else to do it!
It depends on what you're washing. I stack and wash immediately after meals: That is a lot faster than letting them build up, and much more effective. But if I've used things like large mixing bowls or cutting boards, I will wash those immediately after I've finished using them in food preparation: That way the pile of dishes won't look so scary. It really depends on what works for you.
