Hemp scored twice in the first half after Arsenal defender Lotte Wubben-Moy’s header put England in the lead within two minutes.
But England continued to dominate as substitutes Ella Toone and Rachel Daly extended their lead in the second half.
It was a comfortable victory for the Lionesses to end a successful warm weather training camp in Spain, but Italy were presented some good chances from defensive errors, which manager Sarina Wiegman will be keen to wipe out.
