@ronhic - I will try ALDI when the persil is all gone.
My machine does have a pre-wash, but It causes the electronic/timer to stop working properly, meaning I have to pull the machine all the way out, remove the plug, then plug it back in, before it unfreezes and allows me to select a wash, so I won't do a pre-wash in it, I do however if really needed boil (95) or run it through a pre-rinse. (basically It Holds, and doesn't come out of Hold).
I will be trying Dettol in the future too.
Meanwhile Jon, I am certainly not under dosing. one Chef jacket, one trousers, one Apron - 2 Persil Tablets. Really don't think that's under dosing, more like Over dosing.
I am just saying the one time I tried Ariel Stain remover with the Persil Tabs, no suds at all, 60C wash and needed re-washing due to dirt another 60 wash.
I gave the Ariel to my Uncle, who has Ariel anyway, and he's happy with it.
At least with Vanish, the suds concentration increases slightly, and things come out clean.
I am unsure where my local cash & Carry is, though could order some online, if everything else fails.