Take, for instance, the fact that only a quarter of the firms in this year’s list of the 50 largest will disclose their profits.

Admirably, the Big Four all open the books for us to get a glimpse of the profits they make. As you work your way down the list, however, reporting of profits becomes a rarity.

Likewise, the firms are shy of disclosing the average salary of their professional staff. There are also some curious ways of breaking down fee income, which means the results can, in some places, be less than transparent.

It is clear with some firms that they change their own breakdowns year on year, making comparison very difficult indeed, and making it difficult in some circumstances to grasp exactly what is going on.

This is in stark contrast, of course, to many of their clients, who will have to post a fairly detailed report of their financial results at Companies House.

There’s a disparity that stands out. Why shouldn’t accountancy firms be more transparent? What could they have to hide? Why should they have this advantage when limited companies and plcs do not?

Interestingly, we live in times ­ post credit crunch ­ when increased transparency is becoming the key issue. It’s embodied in the work of the FRC on audit choice, and it’s increasingly central to the proposals in the US on the audit market there. Accountancy firms can show the way here.

The LLPs ­ or most of the LLPs ­ do already, but the other firms can demonstrate they are aware of the issues and open up much more. If, as a profession, accountants cannot be completely transparent, there will always be the perception that there is, dare we say it, something to hide.