I take the hon. Gentleman’s point on board. I know that some commentators believe the right way to go is to scrap the incredibly complex system that we have. Although that might be where we end up, I would like to see country-by-country reporting introduced first, so that we know what activity companies are carrying out in each country, and where they are trading and are declaring their profits will be transparent to the world at large. That would help tax authorities; also, the problems companies would then have with reputation management would cause quite a shift. I would like to see that country-by-country reporting first, but perhaps we will end up in the position that he has suggested.

The estimate is that the tax will raise £1 billion over five years. That is a very small amount given the scale of the issue. One commentator has suggested that Google alone could be assessed as owing around half that figure. The Financial Times has found that in 2012 seven US technology companies paid only £54 million in tax on UK sales of $15 billion. I am aware that corporation tax is levied not on sales but on profits, but the companies we are talking about typically make 20% profit or more on sales, so we could quickly come up with a large number there. Will the Minister tell us how the assessment of the amount the tax will collect was made? What assumptions sit behind it? The figure seems small given all the relevant issues, which we are well aware of.

The hon. Member for Amber Valley rightly mentioned EU law. I will not repeat what he said but there is clearly the potential to challenge the tax through the EU. When one talks to global finance directors, there is no doubt that financing structures and interest payments are the tax avoidance measure of choice—they are how the largest diversion of profits occurs. Will the Minister explain why offshore finance centres and excessive foreign interest payments have been specifically excluded from the diverted profits tax? I welcome the moves that have been made, but a large area has not been addressed by the tax.

I will mention a few other aspects of profit diversion. The Minister may tell us that they are included, but my guess is that most are not. There are well documented loopholes used by banks for tax arbitrage between countries, particularly between the UK and the US, because different instruments are taxed differently in the two countries and by shuffling money backwards and forwards it is possible to create beneficial tax arrangements. Will the legislation address those loopholes? Does the legislation deal with hybrid entities, for which there are similar opportunities because of the different taxation of legal structures between different countries? They are another method that the financial services sector in particular uses to shift profits.

Some of the issues connected to Luxembourg have been mentioned already, but will the Minister address the issue of the wholesale tax avoidance and profit diversion that, for example, sees Vodafone holding five times as much capital in Luxembourg as the GDP of Luxembourg, although it does no trading there? That kind of thing enrages the public, and it is high time it was addressed. When will she get the EU to deal with the preposterous activity going on in Luxembourg behind its so-called headline corporation tax rate of 29%?

The Channel Islands have already been mentioned. The particular point I want to raise is that the Majority of contracts for UK private finance initiatives are now financed from those islands. That makes a mockery of the Green Book assumptions about PFI tax recovery; it is assumed that a very high figure—I think it is 6%—will come back to the Treasury in tax receipts, but that assumption completely ignores the fact that PFI deals are routinely moved to the Channel Islands, including those for 50% of the schools in my Constituency, which are apparently owned in Jersey.

Those are just a few of the arrangements that may or not be covered by the diverted profit tax legislation. I suspect most are not, but they illustrate the fact that there is a lot more yet to do.

Diverted profit arrangements do not simply cost tax or allow profit diversion; they incentivise offshore acquisition and ownership of UK businesses. These days, highly profitable UK businesses have to create some offshore financing or else somebody else will do it for them, as predatory takeover activity in the UK is often predicated on offshore finance structures designed to move taxable profits out of the country. A good example would be Betfair. Last year, a company was looking to take it over in an aggressive takeover. I wondered what the company was going to add in terms of betting technology or new IT, but the clue was the name: “So-and-so Partners, London and Luxembourg”. The factor the takeover was going to add was the shifting of Betfair’s profits away from the hands of the Treasury. In the end, that takeover did not go through, but the diversion of profits affects business ownership and competition in the UK.

I mentioned the amount that the tax is expected to raise. I think the figure is low because of what are traditionally called behavioural effects—in other words, what companies may do as a result of the tax—and so I am interested to hear more from the Minister on what the Treasury thinks will happen, as opposed to the idea that companies will simply sit there and pay the tax. What kind of measures does the Treasury consider companies might take?

How will the success of the tax ultimately be measured? As the hon. Member for Amber Valley rightly said, it could well be that the real success of the legislation will appear not in diverted profit tax receipts but as higher corporation tax receipts. Does the Treasury have any way of judging how the measures have played out?

I welcome what is happening and hope that the Government will do more. I have mentioned country by country reporting, and that has begun to happen in the financial services sector. It is driven partly by other countries’ legislation. I hope it will expand through the work of the OECD and pressure from our Government, and in the operation of companies around the world will become more transparent. We should push for that.

John Cridland, the head of the CBI, said about a year ago that he was confused and did not know what the Government wanted on tax. I do not think that it is confusing at all. We want companies to account for their UK activities in the UK and pay tax on the profits that they earn in the UK. It could not be any simpler. I addressed the CBI tax forum two or three months ago and made that point. I said bluntly that if its companies were doing otherwise, we would steadily be coming after them.

The Government have a record of at least moving in the right direction. I was a member of the Public Accounts Committee for more than four years and took part in scrutiny of large companies and tax advisors; judging by the culture and attitudes out there, we still have a long way to go. I vividly remember asking a tax advisor how many of the schemes that he had advised individuals and companies to adopt in the previous few years had been made illegal; he cheerfully said it was all of them. It is good news that HMRC keeps pinning those things down, but the fact is that there is an industry out there constantly looking for new ways to avoid the taxes that we try to levy. I hope that the Treasury will make its proposals work, and will continue to recognise that there is still much more to do.