Green Woodpecker in our Back Garden

Only having seen a Lesser Spotted Woodpecker before, I was amazed to see this Green Woodpecker in our back garden yesterday.
Birds are not frequent visitors to our garden as we had two cats (sadly we are now down to 1 as the other died of FIP on Friday) so having a Green Woodpecker in the garden was a real treat to behold.

Ill have to check the bird book as I am not sure whether it is male, female or a juvenile given the colouring of the face.