Strengths:
:check: they enable individuals to participate in the political process between elections.
:check: PGs reflect the system of pluralist democracy, which give citizens another voice in the decision-making process beyond parties.
:check: PGs counter-balance the tyranny of the majority by lobbying on behalf of minorities, for example, Stonewall has been campaigning for decades to get equality for the LGBTQ+ community, in 2014, Cameron legalized gay marriage.
:check: they can bring expert knowledge to the government's attention on an important issue, ministers and MPs are rarely experts on every issue.
:check: PGs keep governments on their toes, and encouragement to be responsible, democratic, and answerable, they act as a limit to government power.
:check: PGs promote debate and educate and inform the electorate, they ensure healthy debate occurs