The pink flower I think is campion and the huge one is giant hogweed. This is one that you should give serious thought to destroying. Wear gloves and do not allow any of the sap onto bare skin.
Cacoethes: An irresistible urge to do something inadvisable
Could I be so bold as to suggest that the latter pic is not giant hog weed... I'm quite familiar with that plant as its grows all along the lea river where I live
Sure you can tomatus. Pooling ideas about plants is what we are all about. Its difficult to guess the scale of the plant from your picture. I cannot at the moment come up with an alternative.
Cacoethes: An irresistible urge to do something inadvisable
I'm attaching a couple of photos of plants I ant identify- can anyone shed some light? 
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The pink flower I think is campion and the huge one is giant hogweed. This is one that you should give serious thought to destroying. Wear gloves and do not allow any of the sap onto bare skin.
ThNks for the quick reply.
Could I be so bold as to suggest that the latter pic is not giant hog weed... I'm quite familiar with that plant as its grows all along the lea river where I live
Sure you can tomatus.
Pooling ideas about plants is what we are all about. Its difficult to guess the scale of the plant from your picture. I cannot at the moment come up with an alternative.
Red campion as previously IDd
I don't think the second is an umbellifer, I think it might be Valeriana officinalis, one of the plants known as valerian
In the sticks near Peterborough