That's just the same question, I'd say let's put proportional effort for the return on investment. So at least a 4-1 effort in favour of attacking tax evaders and avoiders, let's have advertising campaigns that we are targeting big businesses and "coming to get you" and lets stop propping up British controlled territories that are little more than offshore havens for the super rich.
Finally lets have commentards on forums boiling about tax evasion and tax avoidance on at least a 4 - 1 basis, rather than posting tons of stuff about benefits and then just saying "lets do both" when the super obvious is pointed out to them.