I have read and written about the desirable attributes to look for in a business partner: but I have never seen a list setting out the characteristics to avoid. So I thought I would itemise the most dangerous flaws I have observed among top executives.

● Endless excuses: certain bosses are incapable of admitting any failings – their entire management style is about finding others to blame for setbacks. Since they never own up to guilt, they never improve – and no one wants to work with them. If things go well, they steal the credit.

● Conflict avoiders: running a business is not a relaxing affair. Frequently it involves differences – with suppliers, employees, customers, landlords, regulators and others. Wimps who retreat from any form of disagreement, who are incapable of being assertive, are no use.