Pressure groups may seek to impose their ideas on the public or government even where there is limitedpublic support. for example, when trade unions call strike actions involving a public service which can cause disruption to the general public who are unlikely to support the cause.
Disadvantage:
Sometimes pressure groups can have conflictinginterests and will campaign for opposing actions. for example when the ban against fox hunting was being considered, the LeagueAgainstCruelSports wanted it banned but the CountrysideAlliance wanted it to continue.
advantage:
Pressure groups have experts in their membership, they can employ experts to effectively argue their cause
advantage:
There are many pressure groups that have different aims and issues to promote. a wide range of issues can be drawn to the attention of the government.
Advantage:
Pressure groups often raise important issues. Environmental groups have made the government much more aware of the damage being done to the environment from greenhouse gases and other pollutants.