At the time I write this 2010 is nearly over, which means that 2012 is just over a year away. If you are planning far in advance then you might appreciate this free downloadable 2012 one page Excel calendar. If 2012 is too far ahead then I have a 2011 one page excel calendar available for download as well.
Just like in previous years this calendar features the whole year on a single page. It should fit on your computer screen, but you might need to adjust the zoom depending on your default settings.
There are two versions, one is plain, and the other has the UK bank holidays marked on it.
Both version of the calendar are free to download, and should work on Excel 97 and above, or on OpenOffice (which you can download for free).