There have been welcome comments over the weekend from the EU and Germany on support for a unitary tax base for corporation tax. This has always been a condition of a properly functioning common market and is long overdue.
Now Germany also needs to support public country-by-country reporting which could help underpin such a tax base. Then we'd know they were serious.
Meanwhile the UK Treasury will, no doubt, be working out how to undermine such tax unity in a post-Brexit world. Which is depressing.