The rules for internal competitions vary depending on the particular competition. The up-to-date version (July 2018) is in the PDF file below. Main change from the 2010 version is that the requirement that any entry must have been taken in the previous twelve months has been downgraded to a recommendation.
We want to encourage people to get out and use their cameras, but we recognise this is easier for some than others. Members with disabilities or disabled dependants for example, rarely have the time, and those in work are also restricted.