Gay people have been allowed in the British Royal Navy since 2000, but now the military force has agreed to provide "equal treatment to gay and lesbian partnerships" by passing the The Civil Partnership Act of 2004 which allows couples in registered civil partnerships to live in married quarters. Of course, the Navy's "no sex" policy still applies.
So, what about the U.S. Navy? Read about the don't ask, don't tell policy
for gays in the United States military.