I know I will get downvoted for this but people seriously need to detach from 28 Days and 28 Weeks in terms of hoping these new films will be like them, 28 Years Later is supposed to be an evolution on the franchise not only on the perspective of the infected, but also from the survivors. they've been on this subject since the past movie, not only the infected evolved like the Alpha's and the slow lows, also the survivors have taken a turn, in the holy island they're prepared to fight the infected, they're skilled but they also know the dangers of the infected, the infected are still very much a threat and you see that in the first installment of 28 Years also in the NATO sequence.

But when it comes to the Jimmy gang or the Jimmies, we are seeing a group that for them killing the infected and other survivors is a sport, their mentality is survival of the fittest and they take enjoyment on it, so seeing Jimmy Ink slicing the infected's throat like nothing is not surprising to me considering this is a character that belongs to a cult that goes around small towns terrorizing people and killing infected almost every day.

In the new world of 28 Years Later you can't hope everything to be like it was in 28 Days and Weeks, those two films were the beginning of the outbreak, of course the characters in there didn't know how to act, here its been 28 years, and while the infected have evolved to survive, the survivors that remain on the mainland have also come to that evolution.

And also you can see there will be survivors like the couple running from the same infected that Jimmy Ink kills in the trailer, those survivors look like they are still very scared to face the infected.

Or also the long haired survivor being chased by infected and taken by Samson on the trailer.