NOTDEC UK is a registered UK charity: Registered Charity No. 259732. This means that donations to NOTDEC UK by UK taxpayers can be Gift Aided - so NOTDEC UK gets back the tax you paid on the amount you give.
Further details, including past accounts, are available from the Charity Commission.
In Uganda, registration as a Community Based Organization (CBO) is important. NOTDEC Uganda's registration is up to date — Kasese District Registration Number CBO/78. Registration as an NGO is not required.