One of the things commonly noticed is the difference in tone between reporting of terror attacks in the USA and the UK.
UK attacks tend to be reported on for a couple of days on the front pages of the news, then move rapidly but steadily down the priority list as the England team lose again (pick absolutely any sport and that happens) or someone flashes their bits on live TV. It's not because we're callous, we get indignant as hell when another country is attacked. We are no more goldfish brained than the rest of the world, not that THAT is saying much. We're simply used to it. Mass casualty terror attacks were common enough that they began to be treated as less important than an unexpected bout of sunshine.

Notice the distinct lack of blue in the above chart after 9/11. Apart from 7/7/05, which killed 52, there is nothing really. This despite the UK not only being heavily involved in the War on Terror but having a significant Muslim population.
Part of it, no doubt, is down to an extremely effective police force. Part of it is down to who we let in - the vast majority of our muslim citizens came here to get away from fundamentalists. Part of it is how they came in - forced integration is a sometimes painful but effective technique. Some of it, dare I say, can be put down to the memory of just how downright homicidal the British can get, inherited from the days of Empire and reinforced by our football fans. Some of it is luck, without doubt.
Whatever it is, the mixture works.