This is a classic straw man used by those who deny the relevance of City’s audits (I know that’s not your point but it is the effect). Nobody is suggesting audits are a guarantee a company is free of fraud or that there is not a major issue with general audit quality. Quite evidently, there is.
My point is that we aren’t talking about a normal audit. We are talking about a very high profile company with allegations of false accounting since at least 2013, actual “prosecutions”, multiple cases presented by lawyers and accountancy firms over the years, very specific (written and detailed) allegations relating to the company’s biggest commercial contract and many other matters capable of specific audit enquiry. In that context, clean audits including for the year just ended are, in my view, highly persuasive. Because, as I said above, the only 2 scenarios I see as possible are the auditors being given false reassurance or auditors involvement in wrong doing (which I don’t believe). Right or wrong, I dismiss the idea the BDO have not enquired in detail each time an investigations, charge or material allegations have been presented. So for the PL to win, City have repeatedly lied to the auditors (as well as lots of other parties). Again very unlikely
And I agree with you that it's inconceivable that, in this particular case, that BDO have just blindly ticked off the actions in their audit guide without being for more assiduous than they might otherwise have been in the absence of these charges.
But many on here don't have the knowledge and experiences that you, I and a few others on here have, and I wanted to point out that it's not always black and white. Let's take a hypothetical (but probably not far from real) scenario with CIty & BDO. As part of their audit, BDO will look at material contracts, certainly the ones with Puma & Etihad.
They'll look at the signed contracts to understand the financial responsibilities of the parties and will check those have been adhered to. If Etihad's contract says they'll pay us £60m a year, and they'll get various naming and other rights, BDO will presumably check they've been granted those rights, and have paid us correctly for them. In other words, that's it's not a sham contract. And they'll want to see the payment has been correctly accounted for in the books.
Under normal circumstances that would probably be enough but I suspect they'd also now want reassurance that the Etihad payment wasn't disguised equity funding. To get that, they'd need to get confirmation from Etihad that it's all their own funds. To do that fully they'd want more than reassurances however, they'd want access to Etihad's own books. I'm not sure Etihad has any requirement to grant that access but let's assume they do, for the sake of this scenario.
BDO then see that Etihad has paid their £60m but also that £100m has come into Etihad from the Abu Dhabi Tourist Authority. They then have to form an opinion on whether that £60m was paid fully out of Etihad's operational cashflow, fully out of the ADTA revenue or partly from both. We know from the evidence presented to CAS that it was partly from both. There may be no way of telling though, other than verbal assurances and it's those they'll need to rely on to form their opinion. They might even contact the ADTA but at the end of the day unless they have or can get evidence that someone isn't telling the truth, they'll have to accept those assurances and agree that the sponsorship was all revenue and not disguised equity funding.
However it's possible that the ADTA was later quietly reimbursed by companies controlled by Sheikh Mansour and BDO will never have been aware of this. As I said, this is hypothetical and I don't think for one moment this was the case (although we know some of it up to the use of ADTA funds for Etihad certainly was) but my point is that BDO can be as assiduous as they like but in a case like this, they could eventually run out of road and have to form an opinion based on the evidence they have.