The EU referendum continued to dominate the political headlines on Wednesday. Here's a summary of the latest developments in the campaign, with just 29 days left.

• The Institute for Fiscal Studies warned the UK could face an extra two years of austerity measures if it votes to leave the EU
• UKIP leader Nigel Farage accused the IFS of being biased because it was part-funded by the EU. But PM David Cameron, campaigning for a Remain vote, said it was the "gold standard" in impartial economic forecasting
• A dozen former senior military officers have warned that EU policies are undermining the UK's combat effectiveness and advocated a vote to leave
• Millions entitled to a vote in the EU referendum could miss out because they are not on the electoral register, campaigners have warned
• Filling in for David Cameron at this week's PMQs, Chancellor George Osborne denied pro-EU government web pages were breaching electoral law as he urged colleagues to focus on "the substance rather than the process"
• Operation Black Vote released what it called a "hard-hitting" poster urging black and ethnic minority voters to take part in the EU referendum - but it was described as a "disgusting" example of "sectarian politics" by Nigel Farage

And in some non-EU referendum news, the government is considering cuts to British Steel pension benefits in a bid to save Tata Steel's UK operations.

Campaigning with Nigel Farage is a refreshingly different experience but the question remains - can he change minds among the unconvinced to win a referendum?

Image source, PA

David Cameron has urged young people to register to vote in next month's EU referendum and use the "most important vote they'll cast in their lifetimes".

Would-be voters have until midnight on Tuesday 7 June to sign up to the electoral register.

Government figures show more than one million people have signed up to the electoral register since 1 March.

However, the All Party Parliamentary Group on Democratic Participation has pointed to 2014 research showing 7.1 million people have gone missing from the roll.

Newsnight

Vote Leave has responded to Labour MP and Brexit campaigner Khalid Mahmood's criticism of its campaign, after Mr Khalid accused Vote Leave of having a "very negative" focus on immigration.

In a statement to BBC Newsnight, Vote Leave said:

David Davis will also use his speech to attack the latest Treasury analysis which warned that leaving the EU could tip the economy into a year-long recession with the loss of up to 820,000 jobs.

He will say: 

Image source, Getty Images

Senior Conservative MP and former leadership contender David Davis is to contest warnings that a vote to leave the EU would damage employment in the UK.

In a speech on Thursday, the former Europe minister, who is campaigning for Leave, will say: "The EU has been a destroyer of jobs across the continent, and has created next to no jobs in the UK in recent years. Britain, not the EU, is the job creation machine."

He will add: "The EU is in fact a job transfer machine - switching employment from British workers to those from the continent."

The government is expected to announce a consultation on changes to British Steel pension benefits in a written statement in the Commons tomorrow.

Labour's shadow work and pensions secretary, Owen Smith, said it would be "totally inappropriate" for ministers to "rush out this vital announcement, in a written statement without any scrutiny on the final day before a recess". He added:

Lib Dem Steve Webb, a former pensions minister in the last coalition, said the government was "going down a very dangerous path" in seeking to change the law.

Mr Webb added: "Rushed legislation could open the floodgates to employers who may wish to walk away from their pension schemes rather than honour their pension promises. The government must tread very carefully in this area."

Image source, EPA

The government is considering cuts to British Steel pension benefits in a bid to save Tata Steel's UK operations.

On Thursday, ministers are expected to announce a consultation on proposals that the annual pension increase be based on the Consumer Price inflation measure, which is usually below the Retail Price measure currently used.

Tata Steel is currently considering bids for its loss-making UK operations.

That sale process has been made more difficult by the £485m pension deficit.

More here.

BBC Newsnight

Khalid Mahmood says the Leave campaign has failed to put forward an economic case forward for leaving the EU, focusing instead, he says, on immigration.

"They haven’t put forward any credible academic studies on the issue of how the economic situation would be better off. And that has really hindered them," he tells Newsnight.

Asked whether he's now thinking of voting Remain, the MP says he's thinking about it "very seriously".

BBC Newsnight

Labour MP Khalid Mahmood, who resigned from the Vote Leave campaign over what he says was its "very negative" campaign on immigration, has been speaking to Newsnight.

"They're trying to frighten people away on the issue of migration," he says of the Leave campaign, and suggests it is costing them support.

The Birmingham Perry Barr MP also says black and ethnic minority (BME) voters feel they've been "neglected" and "isolated" by Leave and are leaning towards Remain.

Simon Jack
BBC Business Editor

The government is considering changes to the £15bn British Steel pension scheme to protect the future of UK steel making, the BBC's business editor Simon Jack says.

In a written statement tomorrow in the Commons, ministers will announce a consultation that could reduce 130,000 pension scheme members' benefits by changing the annual increase from the current Retail Price measure of inflation to the usually lower Consumer Price measure. 

The fund and its £500m deficit has been a source of unease for current owners Tata and a deal-breaker for any would-be buyers. Reducing its burden will make a sale easier and may even convince Tata to hang on to its UK steel business. 

Any such change would be very controversial as it would set what some would see as a dangerous precedent. The move is evidence of Business Secretary Sajid Javid's sense of urgency to resolve an industrial crisis which has put 10,000 steel workers jobs in imminent danger.