Welcome Jerry to the best ribbing forum in the U.K!
£25k will get you a lot of Rib, if you check out this thread here, someone else was in a similar position:
Leaving Sailing and need rib for the family:
I would say it comes down to what style of rib you want an offshore type, hardcore rib , e.g Ribcraft, Delta, Tornado, XS, Humber, Redbay, Osprey to name but a few.
Or if you want a Med style family boat with stripey seats etc, Zodiac Medline, Avon Adventures, Picton Cobras etc
Or a sports Rib, i.e Scorpion, Solent etc
However, these categories I have allocated are very loose, all of them are good offshore, some better than others, and all of them can be used as a family boat. A Scorpion does all three very well, and a used one could be picked up for within your budget.
Below are pictures of a Ribcraft 585, Zodiac Medline, Scorpion 8.1