A former acquantaince of mine used to collect stamps for charity but since his death, I am left with people still donating stamps within my organisation but my having no charitable outlet for them. Does anyone have any useful suggestions of any appropriate UK charities?

My Family is trying to build an Orphanage in our hometown in Madagascar and we are struggling with being able to fund the project. We have support of a couple of local Malagasy charitys but are still very short of what we require. I was wondering if there are any UK charities that cater for these sorts of projects and how I could get in contact.