Can anyone recommend a product to clean black mould from shower and shower curtain, have looked in home pro and du home but can only find products for pink mould, many thanks for any advice.

Add some bleach to a bucket of water and soak the shower curtain in that for 15 mins. Presuming it's a plastic curtain. otherwise the bleach might damage any pattern on a fabric curtain.

Expect the same thing you use anywhere - bleach - is probably the best.  Just Google for directions.  I would replace curtain.  

Don't forget toxic mold will release spores into the air, so they could land on anything and anywhere. The curtain is only visible part of the problem.

 

if you feel any symptoms get someone in, but definitely throw curtain away.

Our shower curtains go in the w/machine and comes out like new..