normally, all the evidence in trials is submitted in 2 copies. One for the other side, one for the court and obviously one for yourself. The other side is meant to do the same. Those documents are normally in paper format and are included in a bundle. They are then numbered so each bundle has the same amount of pages.
During any trial, when cross examining or simply asking questions, a judge or the other party or yourself, would ask questions and refer people to a certain page in the bundle. So, in your case you would include, let's say 20 photos, which would be pages 10 to 20 (if you can fit more than one photo in the page). You would then state that, on such and such a date, we got married and many people attended the ceremony, please see pages 10-20 of the bundle. You would say that the UKBA had the info and documents submitted with the application (P60s, marriage certificate, etc etc) pages XYZ of the bundle but the UKBA chose to ignore those and came up with a decision without any basis.
I personally would choose several photos and print them out, i wouldn't use a CD, maybe take it with you and a laptop, but make sure you include photos in the bundle of docs (which would normally include all the evidence, proof of exercising treaty rights, marriage certificate, communication with the MP and UKBA [if relevant to your case] and so on).
Good luck and remember, the UKBA are only an executive branch, their actions can and most of the time ARE overruled by the judicial branch so you know you're in the right, do not let the original negative decision put you in doubt of the outcome, you shall win! Go with that mentality.