Ed Miliband has promised his party will look into any new evidence regarding allegations of vote-rigging in Falkirk, but refused to comment on whether the inquiry would be reopened.
The Labour leader admitted there were "machine politics" at play in Falkirk, but insisted his party are "learning the lessons" from the scandal.
More top news
Professor Sir Brian Jarman told BBC Radio 4's Today programme "it's likely" that similar events to Gosport have occurred in other hospitals.
Tory Eurosceptic Jacob Rees-Mogg played down the significance of the deal struck by the Government to win over pro-EU rebels.
The Tanaiste issued the warning to the UK ahead of a visit to Dublin by European Commission President Jean-Claude Juncker.