Lok'nStore has ended talks with a potential bidder, three months after the storage firm first admitted it had received an early stage expression of interest."The company has ceased to be in an 'offer period' for the purposes of the City Code on Takeovers and Mergers," it said Tuesday.The group added that trading continues to improve, with occupancy growing strongly since the winter. "The board is confident Lok'nStore is well positioned for the future," a statement read.Its shares soared in April to their highest since last October when the announcement was made.