Some suggestions:

Royal Marsden (1095197, The Royal Marsden Cancer Charity):

http://uk.virginmoneygiving.com/char...rityId=1000108

and two children's hospices:

Helen And Douglas House (1085951, Helen and Douglas House):

http://uk.virginmoneygiving.com/char...elenanddouglas

Acorns Children's Hospice (700859, Acorns Children's Hospice):

http://uk.virginmoneygiving.com/char...rityUrl=acorns

The last one you might have seen on Aston Villa shirts up until a couple of years ago but please don't let that put you off!