Everyone has built in preferences and prejudices about everything in life and car reviewers are no better than anyone else in that respect, what they actually write can also be influenced by what 'incentives' they are offered by manufacturers (brown envelope anyone).
The Skoda is definitely not manufactures in UK, and VW group does not have a plant here making any vehicles as far as I know, at least Honda and Nissan put money and jobs back into our economy by making vehicles in UK.
I don't think Jazz has 'high running costs' - certainly not of the garage repair bill variety anyway, reliability is generally bulletproof which is beyond price really for the knowledge that you can trust your car to start when you need it to, take you wherever you want to go, and then get you back home without drama.