Catherine Pusey, interim chief executive of the PFRA, said the regulator still hoped to receive an invitation to the private meeting on 23 July, which was set up in response to recent negative media coverage of face-to-face fundraising. She said the PFRA discovered "very recently" that the summit was being held.
"It’s disappointing that this could take place without us," she said. "There are three organisations involved in monitoring fundraising and ensuring its high standards, and we’d like to think we are all complementary and that we work together.
"It is slightly counterintuitive that one of the three has gone out on a limb in this way."
The IoF said yesterday it had limited the summit to directors of fundraising who are members of the institute so there could be frank discussions and an "in-house atmosphere". Pusey said: "We’ve asked the IoF to consider inviting us, preferably as a participant, but if necessary as an observer."
The summit has been called after a recent investigation by The Sunday Telegraph newspaper found that fundraisers from the agency Tag Campaign had potentially breached the IoF’s Face-to-Face Activity Code of Fundraising Practice during a text donations pilot campaign it ran for Marie Curie Cancer Care.
A spokesman for the IoF reiterated that the organisation had decided to limit access to the summit in order to encourage open discussion.
"After the summit we will be looking at what actions we need to take and will fully involve the wider fundraising community," he said. "There is no question – we will involve the PFRA and FRSB, our partners in self-regulation, as well as the agencies themselves, further along the line."