When I ordered GBMINI back in March 2003, we were not allowed to have rear fog lights – but I did not want a gap in my toggle switch panel so I had ordered a fully populated UK panel (from MikeyTheMini)
Now of course we are allowed rear fogs but some people do not order them and still have a gap. One option is to replace the toggle switch panel with a new fully populated one (like I did).
Another option is to buy a single toggle and fit it into the blank space – some people will split their old panel into individual toggles, when they buy a new one:
Today EBMCS03 has posted a pictorial how-to on installing a toggle – if you are brave with a drill and bothered by the gap, check it out!