Employees must stick to official channels to make sure their messages are fully retrievable.

The concern is that WhatsApp and other services can be used for conversations without the normal scrutiny that would cover conversations over work email or similar monitored services.

The UK banking group said it wants its employees to stick to 'approved channels' for work-related communication

Companies in the UK and US have began receiving fines for using messaging services such as WhatsApp and Facebook for work communications

NatWest Group staff will no longer be able to use WhatsApp, Facebook Messenger or Skype on their corporate devices

WhatsApp and Facebook Messenger to be banned for internal NatWest communications You can still reach customer service through WhatsApp The Financial Conduct Authority issued fines to Morgan Stanley for irretrievable conversations One of the UK’s largest banks has banned employees from using instant messaging apps such as WhatsApp,

NatWest has taken action in an effort to stick to rules over workers' use of unauthorised electric messaging as well as to avoid hefty fines.