You are not excused from taking responsibility for your government, which is formed on the basis of the support of its people. You are responsible for your British government, citizen.
I certainly am excused when we don't have proportional voting, coalitions are used to keep the major parties in power and I don't vote anyway because I do not wish to be responsible for what the government do which is never what I have voted for. No UK party had ever kept to their manifesto - they all serve the same masters: corporations and banks.