In a word Napisan, mix a capfull well in a bucket of warm/hot water with a squirt of morning fresh, I use a kitchen mop, the sponge type or the micro fibre one, coat liberally with the suds then wash off with clean water.
Allow to dry thoroughly before rolling up.

I used to do it with a small hand sponge but the mop idea is much quicker and easier on the shoulders. Been using this method for 3 years now and still as good as new.

Frank HI,

Be a little careful with the 30 second outdoor cleaner, it is chlorine based & a bit stronger solution than bleach.

Mike.

Thanks Mike
I have been using it for a while with no adverse results

I do use it sparingly.

frank

There is an awning cleaning product that you can buy from any caravan accessories shop I don't remember the name and I have run out but it works very well. After cleaning my awning I give it a liberal spray with armoral and roll it up this helps to protect it and also stops mould forming whilst not in use.
Next time I roll it out I give the awning a wipe over using piece of towling on the end of a broom.