Anyone know how best to clean slippery decking?

[MyEye]

It's a bit slimy and green, doesn't get much direct sun.
I have a half-memory that you can clean off the gloop with Fairy liquid and a stiff broom -- anyone know if this is true?
Anyone know a better way?

[mishymoo]

Pressure washer?

[BirdyBedtime]

MyEye - ours was like this over the winter and got quite slippy when it was cold. The only way I know is a power washer - borrow one if you can as it brings it up like new.

[MyEye]

was hoping to do it without specialist equipment... I've done some diluted bleach and have gone over again with Fairy, it's a bit streaky but fingers xed.

[beep]

we used www.ronseal.co.uk/products/product.jsp?id=32&gclid=CNrW4dnPlpoCFSUSswodVBWkNw last year and it was lovely afterwards, got it in homebase or B+Q I think.