The Government is selling Royal Mail short by "pressing ahead" with its current sale, despite selling it at a "huge undervalue", the shadow business secretary said.
Chuka Umunna told Daybreak Royal Mail was valued at "between £2.6-3.3 bn" and endorsed by City brokers.
He warned the sale was becoming "a dream" for City speculators but a nightmare for the taxpayer.
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British Transport Police (BTP) were called to Loughborough Junction station in south London at 7.30am on Monday.
The process takes less than five minutes and involves filling out some personal details.
Donna Keogh has never been found following her disappearance in 1998, when she was just 17.