Which engine was the Rolls-Royce H.10?

What was the Rolls-Royce H.10 engine named in the specification?

After a check and correction, the H.10 is identified as the Rolls-Royce Buzzard, not the Napier Lion.

The torpedo-bomber specification names a Rolls-Royce H.10, prompting an audience question about the unfamiliar designation. A search of the notes first raises the Lion and then corrects the identification. The H.10 was the Rolls-Royce Buzzard, not the Napier Lion. The on-air correction resolves the designation without repeating the initial mistaken recollection.