Education is very highly regarded in Uganda, and your money will support the six-classroom school in the Mukono district of the country. The people of Uganda have been through hard times and civil unrest, so it is a pleasure to help them out in social improvement.
This charity isn't directly benefiting people in the UK; you aren't giving money to a charity which you personally might benefit from. Instead you will be helping people on another continent, just helping to give them the barest services that we all take for granted. Give generously, and give with an open heart!