I'm in the same position as Papaindigo - 05 with about 46k. Most replacement recommendations that I've seen over the years are based on mileage OR time. if you have a 12000 mile oil change interval but only do 4k pa, the usual recommendation is STILL to have an annual change, not wait 3 years

My recollection of the belt change recommendation is 100k miles or 5 years - but I could be wrong there.
And yes, while I am indeed as old as dirt

, as I live in London, almost all of my travel around town and commuting is by public transport. Unless you have to, you DON'T drive in Central London in daytime, unless you really have a thing for traffic jams (actually even at night you can get stuck in traffic jams depending on where you are driving- and I mean at 2-3am). The Jeep is for leisure use - shooting, photography, touring etc, hence the mileage.