One of the big surprises of the coronavirus crisis for the City is how well working from home has gone. Companies of all kinds say the shift has been remarkably smooth and the early anecdotal evidence confirms academic studies showing that most people find working from home more productive.

But productivity is one thing. What about the quality of the work? How will it affect the decisions made by portfolio managers, for example? Many observers believe that swapping the office for the shed at the bottom of the garden is likely to impact the performance of investors. There is less agreement on whether it will be good or bad.