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Brexit debate rhetoric gets extreme as vote nears

With just over a month to go, the EU referendum debate is heating up and with that comes both a slew of bold forecasts and strong political rhetoric.

In the last week alone, former London Mayor and "Out" campaigner, Boris Johnson, told The Sunday Telegraph that the European bloc was following a similar track to the likes of Napoleon and Hitler, by trying to create a powerful superstate.

Meanwhile, British Prime Minister, David Cameron came out saying that the leader of the so-called Islamic State, Abu Bakr al-Baghdadi, and Russian President Vladimir Putin would probably be "happy" if the U.K. chose to leave.

However, these "extreme" statements and statistics may not be what the British public needs ahead of June 23, Mark Boleat, policy chairman at City of London Corporation, told CNBC Thursday.

"There are extreme claims on both sides, which is a great pity," Boleat told CNBC.

"However, the notion that there is some real data and hard facts (on leaving the EU), well there aren't. This is a matter of judgment based on analysis and evidence." The City of London Corporation has publicly stated that it is in favor of the U.K. staying in the EU.

"I took part in a great debate last night, that was not acrimonious, it was friendly, there were no wild accusations. We need more debates like that, because the public is really entitled to hear good quality debates, not extreme cases, people not making up information."

"So better quality on both sides would be really appreciated," he added.

Not only are both campaigns trying to fight for Britain's future, but leading institutions have been delivering surveys, polls and reports in full force in recent months; highlighting the potential benefits and/or disadvantages of leaving the political-economic bloc.

While polls have been trying to track the outcome of the ultimate vote, many reports hone in on specific sectors, such as employment, tourism, immigration, and education.

For instance, a report by commissioned by the National Association of Estate Agents, and the Association of Residential Letting Agents, suggested on Thursday that a "Brexit" would likely result in lower immigration levels, which would cause weaker property demand.

The report forecast that the average U.K house price would fall by some £2,300 ($3,360) by 2018, while in London, average prices could slip by £7,500 if the U.K. left the EU.

When it comes to forecasts like these, Boleat said it was expected that the public would "see all sorts of forecasts like that, for particular sectors", ahead of June 23, however the public was "struggling" when it came to digesting all the various forecasts, figures and analyses.

On Wednesday, YouGov's latest poll shows there's still no clear majority, with 44 percent in favor of remaining in the EU, while 40 percent would choose to leave. The rest of those involved in the poll either wouldn't vote or can't decide.

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