The 12-year-old represented England at the Mediterranean Cup in Bolzano.
And she will return to Devon with a bronze medal and two more top five finishes.
Her podium placing came in the girls’ C platform event on Saturday.
Radcliffe scored 215.80 points to finish behind Russian Elizaveta Kanso and England team-mate Callie Eaglestone.
The Plymouth diving also finished fifth in both the girls’ C three-metre and one-metre events, which took place on Friday and Sunday, respectively.