The search comes as the UK media industry is placed under intense political and regulatory scrutiny following the News International hacking scandal.
However, there is no suggestion that the brief is in relation to any specific forthcoming event and is more focused on ensuring the broadcaster has sufficient resources and the right processes and systems in place to deal with any corporate incident.
A spokesman for Channel 4 confirmed that an informal process had been launched and a handful of agencies had been asked to tender but that no appointment had yet been made. The spokesperson commented: 'As with other big companies, we sometimes seek to get an outside view on the day-to-day systems we have in place.'
The most notable comms crisis faced by the Channel in recent years was the Big Brother 'racism row' in 2007 that spiralled into a major international story.
The C4 comms function has gone through significant changes in recent times, with longstanding PR head Matt Baker stepping down last summer after 12 years with the broadcaster.
The comms department was subsequently restructured to make Dan Brooke head of its combined marketing, comms and corporate relations functions.
In June, Channel 4 promoted Jane Fletcher to the role of controller of press and publicity, and last month named Sophie Jones as head of corporate relations.
The broadcaster previously retained Maitland for its corporate comms work and used Citigate to help argue against a potential merger with Five back in 2009. But Channel 4 does not retain any corporate agency at the present time.