ahhhhh! not seen this before!!

Can some one please advise me on what to do about these little blighters i have on my beautiful runner beans!!
Tiny little black flys and eggs (i gather :?  :? ) what are they? how do i get rid of them and will they affect the beans??  
Lots of them are in flower but still no beans!!

thank you !
summer!!

see if you can get a couple of lady birds and put them on the infected beans they love black fly. or just spray them

I had some last year, I just sprayed them, as I didn't see a ladybird in sight.  However, as I've been weeding (I love getting down to ground level and yanking up the weeds), I've seen quite a few ladybirds, so I would let nature do its course.  But keep your eyes peeled in case you get an epidemic.  Also, to avoid blackfly on your runner beans, nip the top of the plants when they get to be about 6' in height.  I forgot to do this last year, and I think that's why I had them

right another part to this, yesterday while weeding the runners (about 8 inches high now with early flowers on) I noticed the ants busy with the black fly, now I am sure last year I read somewhere that the ants are bad and not eating them like I hoped they would. Am I correct on this 

My runners were covered in blackfly last year, ended up looking like soot. Soapy water didn't seem to work. After about a month they were completely gone and the ladybirds were out in force. The crop was later and smaller though.