London has become increasingly economically dominant within the UK in recent decades, accounting for over 20% of national GDP despite containing only around 12% of the population. This growth has fueled claims that London acts as an economic "suction machine" draining resources from other parts of the country. However, London also contributes greatly to UK tax revenues through industries like finance. Looking ahead, London faces questions around its role as the capital of the UK given it governs England less directly than other capital cities govern constituent regions, and whether it could ever function more independently, similar to how Scotland may gain further autonomy.