Nope.
Having said that, I rarely buy singles now anyway. I just wait for an album to be released. Unless it's an artist I've always followed, or a really awesome song (which is quite rare in the music industry these days, IMO), I'd rather save the 79p or whatever. The last single I bought was Dolly Parton's "Here You Come Again".
Most of the #1's are so overplayed anyway there's no point in buying them. Even if I was a fan of Cheryl's FFTL, I wouldn't buy it. It's on constantly on radio/music channels that i dont see point in spending the money.
Likewise, I can see The Climb being severely overplayed in the coming days/weeks. Come Christmas Day, I can see me not daring to venture through music channels because it's the same thing over and over again.