A brief poll in the room showed about 15 people - out of more than 60 attendees - declare they had seen more clients asking about using their pension pot to get into buy-to-let.
The lack of new older landlords as a result of pension freedoms could, according to Ms King, be partly down to the fact regulation has made it so difficult for accidental landlords to seriously consider buy-to-let as a retirement proposition.
Ms King added: "I believe regulators are trying to stifle the market and make it difficult for everybody. Those lenders who can be innovative but offer really competitive products will flourish but my big concern right now is trying to convince my landlord clients that this is [a viable investment] any more.
"They are looking at other things such as Isas and other types of investments."
Ms Sedgwick agreed: "Buy-to-let will become more of a professional type market, people who do this for a living rather than at the side of their desk."