Last year I noticed a new plant growing in my garden. Initially I thought it
was a weed but it looked interesting so I left it (them... there are 2).

I have asked several 'gardening friends' but nobody is able to tell me what
the plant is called.

This year it would appear that there will be a yellow flower. Can anybody
please tell me what this strange plant is.

http://www.argentfamily.co.uk/Images/Plant/dscn2809.jpg
http://www.argentfamily.co.uk/Images/Plant/dscn2810.jpg
http://www.argentfamily.co.uk/Images/Plant/dscn2811.jpg

Much appreciated