For example, the ICONs on my S50 show at the top of the screen for a few seconds, then disappear, although I do get the associated warning message. Having said the above, in Australia (do not know about the UK), the S Series NAVMANs appear to have problems with displaying personal POI ICONS. You can either create your own POI files, or just install the GPS Data Team files to keep your system up to date. This where the GPS Data Team updates come into place.
Once supplied to NAVMAN, and are associated to the maps, they are considered by NAVMAN to be current for a year. In fact in Australia the Safety Camera data is provided to NAVMAN by the same people who provide the maps, and at the same time. In Australia, and I would have thought it would be the same in UK, the Safety Camera data is loaded with the maps.