It all depends on what you call a bit of space?

Theres quite alot of saddle bag options but they are not really secure and you wouldnt really want to be leaving them on your bike unattended for long anymore in this country.

As your thinking of the smaller options of panniers i think youve hit the nail on the head with the small kappa panniers, they are ideal for smaller items and you would probably not notice them if you did any type of riding. As for photographs im not too sure.

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Plough on