Moonlight runner beans not pollinating

My Moonlight runner beans which are advertised as self pollinating are not converting to beans, the flowers are dropping off - can anyone help please

You need bees!  Have patience, they will come.  In my experience runners take a little time until they get in their stride, then you will be overwhelmed with beans.

This article http://www.telegraph.co.uk/gardening/gardeningpicturegalleries/7257995/Which-guide-to-new-veg-2010.html?image=10 says that Moonlight doesn't need insects for pollenation - however I would imagine that the very cold wet weather we've been having might make any bean struggle to set seed - I'd also recommend patience and report back to us later 

It is definitely the weather-they may be self pollinating but like french beans they need warmth -you will get beans eventually-just a matter of time

Many thanks for your advice - we grew the beans sucessfully in our cold house last year, however this year is looking very disappointing.  There is plenty of warmth in the cold house and as we are in Guernsey it has not been that cold.  I am taking defensive action and sowing some White Lady beans, just in case!