https://www.bailii.org/uk/cases/UKHL/2008/15.html
The weight to be accorded to the judgment of Parliament depends on the circumstances and the subject matter. In the present context it should in my opinion be given great weight, for three main reasons. First, it is reasonable to expect that
our democratically-elected politicians will be peculiarly sensitive to the measures necessary to safeguard the integrity of our democracy. It cannot be supposed that others, including judges, will be more so. Secondly, Parliament has resolved, uniquely since the 1998 Act came into force in October 2000, that the prohibition of political advertising on television and radio may possibly, although improbably, infringe article 10 but has nonetheless resolved to proceed under section 19(1)(b) of the Act. It has done so, while properly recognising the interpretative supremacy of the European Court, because of the importance which it attaches to maintenance of this prohibition.
The judgment of Parliament on such an issue should not be lightly overridden. Thirdly, legislation cannot be framed so as to address particular cases. It must lay down general rules: James v United Kingdom (1986) 8 EHRR 123, para 68; Mellacher v Austria (1989) 12 EHRR 391, paras 52-53; R (Pretty) v Director of Public Prosecutions [2001] UKHL 61, [2002] 1 AC 800, para 29; Wilson v First County Trust (No 2) [2003] UKHL 40, [2004] 1 AC 816, paras 72-74; R (Carson) v Secretary of State for Work and Pensions [2005] UKHL 37, [2006] 1 AC 173, paras 41, 91.
A general rule means that a line must be drawn, and it is for Parliament to decide where. The drawing of a line inevitably means that hard cases will arise falling on the wrong side of it, but that should not be held to invalidate the rule if, judged in the round, it is beneficial.
法院案例講得好清楚, 只要兩院批准過,法院唔會輕易override 民主的議會的判斷