British investors have signalled their trust in the market
Net investor sentiment was at 6.1 per cent in February, up from 5.7 per cent in January, a Lloyds Bank survey of more than 4,000 adults found.
The figures are an increase of three per cent this month compared to the same time last year.
The boost marks the highest figure recorded since April last year – two months before Britain voted to leave the European Union (EU).
Gold was where investors were most bullish, with a growth of 46.4 per cent, while UK property was at a strong 31.1 per cent.
Commodities grew by 15.5 per cent as did UK shares.
EU officials, including President Juncker, signalled Brexit would be dim for Britain's economy
Eurozone shares took a big hit as they fell by 34.1 per cent and cash also fell by 30.1 per cent.
Markus Staatsmann, CIO of Lloyds Private Bank, said: "We saw a further increase in investor sentiment in February, as investors continue to ride the positive wave of sentiment that marked the beginning of 2017.
"Despite this, gold saw the biggest increase in popularity for the month, which would suggest that investor optimism is tempered somewhat by the need to shield against persistent geopolitical uncertainty."
The new figures come as further confirmation of Britain's strong economy despite the gloom and doom predictions before Britain chose to leave the EU.
On Monday the European Commission was forced to admit the UK had "maintained momentum" since the vote.
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Lloyds Bank found investor sentiment was at 6.1 per cent in February
UK property is still attracting high investment
The Commission upgraded Britain's growth forecast as it predicted British GDP will expand by 1.5 per cent this year.
The figure was significantly revised upwards from a 1 per cent prediction made last autumn in the aftermath of the referendum decision to leave the bloc.
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However, the forecast was still below the 2.1 per cent GDP growth predicted by the commission before the Brexit vote.
And the officials went on to claim that the impact of the referendum outcome "had yet to be felt", going on to warned that growth could slow down next year.
British MPs welcomed the more optimistic revision, with former Tory Cabinet minister John Redwood, saying: "I very glad they have taken a more balanced view of the economy.
"It is a pity they couldn't have done that before people had their vote."
And Tory backbencher Maria Caulfield, a member of the Commons EU Exit Committee, said: "The GDP growth forecasts are welcome news and this must finally be the nail in the coffin for project fears' predications that Brexit would damage the economy."