the number of new covid cases in the united kingdom have dropped by half in the last two weeks. and with nearly all its covid restrictions lifted, the country is looking for an economic shot in the arm starting next week when americans can travel there freely. so cbs eleth paer is in london with the latest. reporter: it s the very height of tourist season in london, but you d never know it. crucially, there is no sign of the more than two million americans who used to visit every year. this is buckingham palace, and normally at this time of year, mid-summer, the place would be mobbed. but today, just a smattering of visitors. but the government hopes all that is going to change after a radical lifting of almost all covid restrictions. two, one! ( cheering ) reporter: nightclubs have reopened, pubs are back in business and, as of monday, lly vaed americans canh no