Consent powers do not amount to veto

 Agreements often contain a provision that something can only be done with the consent of a particular person. Does that mean the person has an absolute veto over the relevant action? Or are there any limitations on the way in which the person may exercise their power?

In Watson v Watchfinder.co.uk Limited [2017] EWHC 1275 Comm a company had entered into a services agreement with a consultant under which the consultant introduced prospective customers and investors to the company for a monthly retainer.