UK material tends to follow the very definite sanctioned-party-colours scheme. Mind you, even if there's a (nominal) cap on funding well below the millions that SuperPACs throw at single rallies, there seems to be enough in the coffers to no longer have any (major, or even half-way respectable minor) party candidate for even a no-hope-in-hell council seat have to sell themselves with photocopied monochromatic leaflets, any more.
I suspect Party HQs put them in touch with a printshop who do a good bulk discount on the best quality glossy flyers you can get. Maybe even they help with the formattin band wording, with standard templates, but not sure about checking the final text
But here's a nice mix
of the "three major party colours" for effect... Even if it's the old cliche of "vote A, get B, you'd be better off voting C..."
As for flashing the Union Flag and the Ted White And Blue, that's just not (ironically) very British. Or too much, harkening back to the British National Party. Also confusing when not
being representative of Labour-plus-Conservative 'conversation' as part of the argument being printed. Maybe there'd be something flag-like as minor decoration or unobtrusive photographic background item, mostly. But the connotations tend to be strong, even if pride in the Olympics have made the flag nice again in non-political situations.
Even UKIP tend to place prominence on their purple-and-yellow theme, on proper handouts. (Not sure how this crept through
, or when. Surely can't be recently...)