When the dolphins decided to evacuate the earth ahead of its demolition in the fourth book of Douglas Adam’s Hitchhiker’s Guide to the Galaxy, they left a parting message reading, “So long, and thanks for all the fish”.

Ahead of what will be one of the most important British election in recent decades it appears some of those from the City who found a home within government are taking the dolphin's pragmatic approach to government work, as they weigh up the uncertainties of sticking around to see what a future government might do.