Melanic (Black) ladybird.....

I have never seen this type before, so if anyone can name it it would be useful, I have searched the Interweb but to no avail, the nearest I can get is a Black with two red spots but no white.
I will post this to the a nature website to see if they can recognise it, but it is a one off for me.

I have waited for it to thunder all night to get a lightning shot but no thunder has come my way, I hope tomorrow it does.