Complex sentence: They found that the Charity had misled the public by claiming to have raised over £1 million during the first convoy because this amount included the estimated value of the goods raised by during the course of the convoy which were donated on arrival in Gaza.
Split into simpler sentences: They found that the Charity had misled the public by claiming to have raised over £1 million during the first convoy. This amount included the estimated value of the goods raised by during the course of the convoy which were donated on arrival in Gaza.