Current national champion Last, 23, who narrowly missed out on a medal at the Commonwealth Games in Glasgow, will lead a young team in the cross country event in Lillehammer, Norway, next month, racing in the Elite Women category.
The British Cycling squad also includes another national champion, Grant Ferguson, as well as Iain Paton, Beth Crumpton and Alice Barnes in the under-23 category and six junior riders from the Olympic Development Programme.
British Cycling’s Olympic mountain bike coach, Phil Dixon, said: “It’s great to see Annie Last continue her comeback to racing after 15 months out through injury.”
He added: “The World Championships in Lillehammer will allow the riders to compete against the world’s best on what is a very tough and physical track, but one that this young team should enjoy racing on.”
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The UCI championships run from September 2-7.