You do not have 'NewsYesterday' or 'NewsTomorrow'. News is only about the present and hence the word 'Today' is redundant and totally unnecessary. 'UKToday' is viable because a nation has a past and future. If you have 'UKNews' then any foreign news such as the Gulf War or an attack like 9/11 could not be included otherwise what is the point of having 'UK' in the name.