Dominic Grieve (Shadow Attorney General) MP for Beaconsfield, Conservative):-

To ask the Secretary of State for Justice how many (a) prosecutions and (b) convictions there were for the offence of photography contrary to section 1 of the Official Secrets Act 1911 in the latest period for which figures are available.

Answered by Maria Eagle (Parliamentary Under-Secretary, Ministry of Justice; MP for Liverpool, Garston, Labour:-

Information on court proceedings held by the Ministry of Justice for the period 2002 to 2006 (latest available) shows that there was one prosecution and one conviction under section 1 of the Official Secrets Act 1911 in 2002. The information reported to the Ministry of Justice does not include the individual circumstances of offences, therefore it is not possible to identify whether the photography was involved in the offences committed.
The figures relate to persons for whom the offence was the principal offence for which each person was dealt with. When a defendant has been proceeded against for two or more offences, the offence selected is the one for which the heaviest penalty is imposed. Where the same disposal is imposed for two or more offences, the offence selected is the offence for which the statutory maximum penalty is the most severe.
Every effort is made to ensure that the figures presented are accurate and complete. However, it is important to note that these data have been extracted from large administrative data systems generated by the courts. As a consequence, care should be taken to ensure data collection processes and their inevitable limitations are taken into account when those data are used. 

Source: Hansard 

Translation : none as far as we know.