OfCom have now published details of tempoaray operating restrictions affecting several amateur bands to allow for additional commercial and official frequencies during the Olympic and Paralympic Games. The document can be found at http://licensing.ofcom.org.uk/radiocommunication-licences/amateur-radio/ar_spectrum_use/
Whilst several bands are affected to some extent, it is likely that the 70cm band will be most relevant to SOTA. The document makes rather tortuous reading, but in simple terms it means that frequencies between 432MHz and 433MHz (the normal SSB segment) will “out of bounds” from 28th June until 23rd September in the vicinity of various Games venues. G/SE-002 Leith Hill, G/SE-005 Botley Hill and G/CE-005 Wendover Woods are the only three SOTA summits actually within the affected zones, but other summits may also be affected by the lack of available chasers.
The document also states “There are a number of Amateur contests that fall within the period of the 2012 Games. We can accommodate these providing the Amateur activity is kept to the dates of 6th - 8th and 10th July, 4th - 5th August and 14th August, 8th - 9th and 11th September”. I take that to mean that the temporary restrictions will not apply within the relevant contest periods, but that’s only my interpretation so check before use!
73 de Les, G3VQO