The report, published today, shows that complaints made by the public about FRSB members went up from 12,945 in 2009 to 18,442 in 2010.
Membership numbers increased from 1,155 to 1,237, and the number of members that submitted their complaints returns to the FRSB rose from 733 to 851 – a rise of 16 per cent.
The number of contacts that member charities had with their donors also increased on the previous year, from 2.7 billion to 3.9 billion.
The FRSB did not include complaints about legacy fundraising or data protection under separate headings because they were recorded in figures for the type of fundraising that gave rise to them, such as direct mail. These two areas accounted for 1,328 complaints in 2009.
The majority of complaints in 2010 were resolved by the relevant charity, with only 12 being taken to the second stage of the FRSB’s complaints process, when the regulator tries to resolve the complaint.
Of these, two were referred to the FRSB’s board, one of which resulted in the regulator’s first upheld adjudication, made against the charity Painted Children.
Alistair McLean, chief executive of the FRSB, said: "Although fundraising complaints topped 18,000, this figure is a respectably low proportion of overall fundraising activity.
"As a general rule, it takes between 1,000 and 10,000 approaches to generate a complaint and this is a positive reflection of the high standards practised by our members."