Graham Precey, group corporate social responsibility manager at Legal &General, will address fundraisers at the Foundation for Social Improvement's Sharing the Best Forum on 7 October.
"Small charities are simple in purpose, passionate and tend to specialise," said Precey. "It really levels the playing field because they can use their knowledge to attract some pretty major business players."
Precey will also say that now is the time for small charities to change their approach: "It's hard out there at the moment and it's going to get tougher, so we need to look at ways to benefit both communities. Charities can save businesses money on research while developing successful long-term partnerships."