No idea! Brain malfunction!

[Palustris]

I just cannot even give a name of any description to this.

[Maggi Young]

Maybe a Polygala of some sort?

[Palustris]

Sounds right, but cannot find one with this colour flowers, just yet.
Thanks. 

[Maggi Young]

It is a very pale pink, isn't it?  Is there that much variation in the colour of Polygala vulgaris,  perhaps?     The flower  heads are quite chunky, though.

[Maggi Young]

Also, what about pink variation of P. alpina ?
 Not tall enough for P. major I don't think..........
http://zrehacek.myplus.org/os/obrP/Polygala_major.jpg

[Palustris]

Oh for the speed of Broadband!
All the Images of Polygala of various species I have managed to view so far do not seem to have the pink/blue? centre to the flower. They all seem to be either orange, red or yellow. Thanks again.

[alpines]

Can't see the flowers too well from the photo but could it be a Cardamine species?

[TheOnionMan]

Hmmm, rather hard to tell as the image is small, hard to see the floral detail.  Here is an enlarged photo where I tried to extrapolate-enhance the photo, possibly to help make an ID.  I thought Polygala at first too, but maybe a Lychnis?

[Palustris]

Never grown any Cardamine (knowingly) nor any Lychnis except the extremely bright orange one ?arkwrightii?
Wonder if it is Polygala 'Susan's Blush?
Close up

[TheOnionMan]

Aha, with the enlarged zoomed-in photo, I can see the fringed lip to the flowers, most definitely a Polygala.  I'm not familiar with the cultivar 'Susan's Blush', but it looks pretty.

Found a link listing Polygala calcarea 'Susan's Blush', but can't find a photo.
http://fichas.infojardin.com/variedades/p/polygala-calcarea.htm

[Maggi Young]

If 'Susan's Blush' is a P. calcarea form then this pink seems a likely candidate. can't say I've seen it but I like it.