The Foreign Military Sales deal, which has received U.S. State Department approval, is worth an estimated $140 million.
"The UK needs these missiles to replenish those expended in support of coalition operations," the agency said in its required notification to Congress. "The proposed sale will enhance the UK's ability to engage in coalition operations along with the U.S. Navy."
The proposed sale would be a package deal, comprised of as many as 65 missiles and containers, engineering support, test equipment, operational flight test support, communications equipment, technical assistance, personnel training/equipment, and spare and repair parts.
Raytheon Missile Systems would be the principal contractor, the agency said. No government or contractor representatives would need to travel to Britain as a result of the deal.