President Reagan said Wednesday that Vice President-elect Dan Quayle will be welcome at the White House any time, even though he wasn't invited to Wednesday night's state banquet for British Prime Minister Margaret Thatcher.

Posing for photographers before a private meeting with Thatcher, Reagan was asked why Quayle had not been invited to the gala dinner."You know, I don't get involved in the guest list and I don't know why, or whether this was some other engagement or not, so I don't know the answer to that, but believe me, he will be welcome any time," the president said.

Nancy Reagan's press secretary, Elaine Crispen, said earlier that the omission of Quayle was not intended as a slight to the vice president-elect. She said Quayle, a Republican senator from Indiana, had been invited to a state dinner in 1982 and his turn in rotation among the 100 senators had not yet come up again.

As vice president, Quayle will automatically be invited to all state dinners, Crispen said.