beast overheated,

[Ryoken]

had a bit of a worry yesterday, coming home from the shops, noticed temp gauge almost in the red, dunno how long it had been creeping up there, got home. now I know it was a hot day (24 degrees) but , really?.
lifted bonnet , cars running sweet as usual , thermo viscous fan spinning as normal ,

turned car off and left it ,
water level was ok. and oil level ok ( checked when cooled)
checked codes with scanner 1.41. came up with nothing ,
is there anything these engines are prone to doing when warm ,
or am I just worrying too much?

update...............

just to update you guys,
fired beasty up , sat there idled for 30 mins (while I was cleaning garden)

temp gauge read 1/2 went on motorway shortly after , got about a mile or 2 and the gauge started creeping up , right up nearly to the red, but not quite, pulled car over opened bonnet, NO fan on front of radiator
put heating on , full and hot , temp came down , limped car home , turned heating off, outside house, gauge increased, still no fan

either fan or sensor ,
I read codes again this morning , says nothing about a temp sensor failing
is there a way to test the front fan, now it spins freely, not seized,