Yesterday Chris Hawkins mentioned this sequence on 6Music saying that they had already done it from 1 to 100 and back, but "27" like "26" was chosen due to lack of other options. Most of these songs are from my own collection, and I have to say I am not averse to a bit of Biffy Clyro and "27" is rather good so that's why it gets it's place.
The only 6Music top 100 I can find is here their 100 Greatest hits worryingly topped by Coldplay's "Clocks" which I do admit is one of their finer moments but gets topped by their collaboration with the Buena Vista Social Club on "Rhythms Del Mundo".
The problem with any listing like this is that the further you get from the origin, the more sparse the pickings become. There are still a lot of great songs to come, some which you will be able to predict, some where you will accuse me of bending the rules (my rules incidentally) too far, but I have not and will not put up any song I wouldn't happily listen to.
Anyway have a brilliant Tuesday my friends.