Can a wild vipera berus adder kill a human in England?

Practicaly no, ofcourse they can kill a child and a very old person but theyre venom isnt that strong to kill Adult Human being. But in rare cases, when human has allergic reaction to venom they can die fairly quick. Over centuries Vipera Berus (common adder) has kill only a few people (they have been fairly young or in the other case very old).

But in any snake bite you should alwayas head to hospital, no matter how potent the venom is.

I live in Estonia and here about 100 people each year gets tagged by them but no deaths.