Yougov are an internet market research company responsible amongst other business for regular political polls. They have a huge panel and from this have a 'profiler' which can give an instant snapshot of the typical qualities of certain groups. It's a blunt tool but it amused me that it's verdict on WFC fans was well off slightly left-wing accountants. Oldmanray would despair. https://yougov.co.uk/profiler#/
Watford fans also enjoy Kitkats, River Island and drive Hyundais or Kias. Apparently. They also eat a lot of Muesli and East Asian food though not necessarily at the same time.
The Entertainment section appears out of date with Waford fans apparently keen on Frankie Goes to Hollywood, Slade and Emma Bunton.
WFC fans are on linkedin and follow Alistair Campbell and Clare Balding on twitter. Just who the **** are we?
Luton fans also eat Heinz Beans and Branston pickle so you wouldn't want to be caught downwind of them.
Not really much of a sample size. The demographic might explain the more left leaning profile of Watford as opposed to Luton.