Adders - anyone spotted one yet?

With all this early season warm weather I have been searching high and low for an adder to film. The last time I saw one was by accident when I nearly set my tripod leg on top of one curled up. However it slithered away pretty rapidly!!
So if anyone has seen one recently and can pin point a location where they have seen one regularly I would be most grateful if they could let me know. (tel/text 07713637126)