Re: There are an estimated 4.6 million contractors in the UK.
I knw several contractor who have been advised by their UC that they may be liable for IR35
As for the figures? I wouldn't trust them. everyone knows 120% of government statistics are inaccurate, often by very wide margins, hence the current Conservatives massive majority that was predicted in the last election.
I do know of several contractor who basically said F*** it and took early retirement (myself included). Between IR35, HMRC, VAT changes, Digital reporting etc. it really has got to the stage where I would rather be a part time bus driver.
As for promises to repeal IR35 or even review it? More chance of me believing in the tooth fairy