Mr Goodall refutes this, saying the market was self-regulating and "if rents go up, that entices more landlords, so more competition and the market would work itself out".
He also pointed out that the buy-to-let market does not represent the entire private rental sector — as many who buy property can do so without a mortgage or some may inherit property.
The UK’s stagnant housing market — annual house price growth remaining under 1 per cent and home-mover rates on the decline — is often put down to political uncertainty and consumers holding back on decisions until after Brexit.
Mr Goodall agreed with this analysis and suggested uncertainty was more likely to be the cause of any dip in the buy-to-let market.
He said: "Brexit uncertainty is a more pressing issue. People will not invest at the moment.
"Landlords should be getting into it with a five to 10 year plan, but people don’t want to make those kind of big changes with Brexit on the horizon. There’s a little bit of sitting on the sidelines."
Rachel Lummis, adviser at XpressMortgages, also said she had yet to see any evidence of a sell off of buy-to-let stock from their landlords.
She said: "We are seeing more landlords purchase via a limited company now rather than in their personal names which is resulting in landlords with portfolios with a mix of ownership in their private name and ltd company."
Ms Lummis added that the type of property landlords liked — typically a two bed flat — had shifted to more high yielding properties such as HMOs and student accommodation, while many were also looking further afield, out of London and Surrey.
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