Bike hire in Dorset

Can anyone point me to somewhere in Dorset that hires half decent road bikes? My sister-in-law’s partner is visiting in a couple of weeks from California, where he’s a triathlon coach, and he wants the opportunity to own my legs and wear them like a medallion of cycling superiority over a long weekend visiting family near Osmington.
Something light with Ultegra-level equipment should see him right.
Many thanks for any leads! 😀