The rail company says the strong local campaign has influenced its decision and the extra trains at Lockerbie are part of a wider investment.
The Managing Director of First Trans Pennine Express, Nick Donovan, said:
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Keep on top of the referendum results as they are announced from 32 counting stations across Scotland.
ITV Border Political Editor Peter MacMahon says we've just seen a emotional former SNP MSP appearing to concede that the Yes side has lost.
ITV Border Political Editor Peter MacMahon says the first result can only be seen as a setback for the independence campaign.