There is a long-standing and widespread approach that tax is a matter of confidentiality between taxpayers and the tax authorities. I say that the approach is long standing; it is the approach we have had in the UK for time immemorial.
It is also the position that applies in pretty well all major economies, and if we were to change that approach, it would be sensible to do so multilaterally. If we introduced a requirement that multinationals based in the UK had to publish information in a way that would not apply if they were based elsewhere, that would raise questions about the attractiveness of the UK as a place in which to do business.
On how to move forward in this area, I would make the wider point that we work multilaterally. That approach was endorsed by Tony Blair, who, in a recent interview, said that if countries move unilaterally, others will eat your lunch, to put it bluntly. I think that was the phrase he used. It is right that we work with other countries to ensure that we have an effective tax system, but I would not favour measures that left the UK isolated in such a way.