The Royal Society Fellowships

The Royal Society is a Fellowship of the world's most eminent scientists and is the oldest scientific academy in continuous existence.
http://royalsociety.org/
International Scientific Seminars
The scheme provides funding for international airfares, UK travel costs, accommodation at the centre, hire of the meeting rooms and all meals at the Royal Society at Chicheley Hall, home of the Kavli Royal Society International Centre.
http://royalsociety.org/grants/schemes/international-seminars/