He added: “We have a justifiably rigorous selection process but it doesn’t include discrimination and we’re a better fighting force for it.”
Second Sea Lord Vice Admiral Jonathan Woodcock said on Twitter he was “proud” of the Royal Navy’s transgender personnel.
“They bring diversity to our Royal Navy and I will always support their desire to serve their country,” he added.
“I suspect many who doubt the abilities of our diverse service personnel might be more reluctant to serve than they are to comment.”
A Ministry of Defence spokesman said it did not comment on “US military recruitment policy”.
But the spokesman added: “We are clear that all LGBT+ members of our armed forces play a vital role in keeping our nation safe.