As of May, I'm sure many of you are aware that 2014 has been a very mild (in fact the Met Office are suggesting the third mildest year on record!) and also a very wet year so far. Winter 2013-14 was virtually snowless for many as well as being the wettest winter on record in some parts of the country and producing very few frosts. March and April have been much drier, but have still been quite above average in terms of temperatures, especially March. May has also been a generally warmer than average month so far, but not by a lot with the May 2014 CET being 0.9C above the 1961-90 average as of 15 May. Should May come out above average (which I'd imagine that it will) at the end, it will be the sixth consecutive warmer than average month with November 2013 being the most recent colder than average month.
Long range forecasts are also predicting all three upcoming summer months to be above average too, (see the Netweather Summer 2014 forecast) giving us the possibility of nine consecutive warmer than average months. Of course the forecasts for July and August are very low confidence at the moment so it is still a very far-fetched possibility at the moment.
I have attached a graph that represents the maxima and minima for 2014, along with 2012, 2013 and the 1981-2010 average for my location. Of course there are local variations, but I believe this graph is quite representative of the whole country.