In 1931, Harry entered seven tournaments and won three titles including the Priory Club tournament against Keats Lester, the West Kensington Hard Courts against Japanese player Iwao Aoki and the South Croydon Hard Courts against another Japanese player Ryuki Miki.

Lee was a semi finalist at the French championships in 1933, where he beat Daniel Prenn and Marcel Bernard before losing to Henri Cochet.

[5] In 1933 and 1934, he was part of the Davis Cup team, including Fred Perry, Bunny Austin and Pat Hughes.

[6] In 1936, he won the inaugural Palace Hotel Covered Courts at Torquay played indoors against Frank Wilde.

In 1950, Lee played his last event at the Bath tournament where he reached the final losing to British Ceylon player Doug Scharenguivel.