As questions are asked about how many firms in the wide economy will survive after the great coronavirus shutdown, one can equally question how wealth management outfits will fare.

For investors have been liquidating portfolios faster than toilet rolls are flying off supermarket shelves, leading to a huge haemorrhage of funds from certain firms.

True, there is some limited upside to the crisis. Credit Suisse has just report that its private banking business recorded improved first quarter revenues compared to the same period a year ago, benefitting from higher transaction revenues as the market rout led some of its high...