So much expectation weighed on the Prime Minister ahead of her Brexit speech last week.

In the event what she delivered was perhaps the best possible act of brinkmanship available at this time.

She offered some detail on how the Government wanted to take the negotiation forward, stating bluntly that all key parties would need to compromise.

At least there was firm footedness about the need to strike a deal, especially on commitments to regulatory alignment on a number of industries.

Theresa May’s words calling for compromise on all sides, will bring some comfort to businesses wanting assurance that there is an end destination in sight that is not a no-deal.

So will detail on the UK’s rules on goods being as strong as the EU’s, labour mobility arrangements and mutual recognition of professional qualifications.

But businesses outside the aviation, chemicals, nuclear and pharmaceutical industries, who will benefit from continuing membership of various EU regulators, will want to know where they stand.

Most importantly, all companies that export, import and those that supply them or are customers, will want to know what future customs arrangements will there be for trade in goods between the UK and EU.

The ideas of a ‘customs partnership’ or a ‘streamlined’ customs arrangement, she floated- have no substance as yet.

At the moment we are still without clarity on the issue of movement across borders – let alone the consequences for the political future of the UK. The UK’s finance directors need answers on all these issues as soon s possible.

Greg Clark, Secretary of State for Business, Energy and Industrial Strategy, has agreed to be interviewed next month by Financial Director– let us hope he can shed more light on these crucial areas.