Why lendy RICS valuer are so out of whack?

Is anyone aware of any successful claims that have been made by a platform against a RICS valuer on the basis of an overinflated and misleading valuation?  Seems to be a problem not just with Lendy.  FS are just as bad.  One would imagine that one of more of the platforms will already have put recovery claims in against the professional indemnity policies that these surveyors will invariably have.  I would imagine that there is potentially a flood of claims coming if the early ones are successful.  To make an investment decision in property based P2P loans, it's fundamental to the decision that the valuation is credible.