Almost two thirds of UK techies think a Brexit would be bad for the industry, according to a survey by Juniper Research.
Some 65 per cent of UK respondents felt Britain that leaving the EU would have a negative impact on the global technology industry.
Seven out of 10 in that camp felt a Brexit would make it harder for UK tech firms to lure staff from EU countries.
Two thirds of them, meanwhile, cited concerns that the UK tech sector would suffer as a result of reduced funding from the EU and also felt that London's status as a tech hub would be hit.
The findings come after bosses of multiple tech giants such as Microsoft, EMC and Cisco – as well as SCC founder Sir Peter Rigby – came out in favour of the Remain campaign. IDC also predicts UK IT spending will shrink in the event of a Leave vote on Thursday, although others in the industry – including ANS chairman Scott Fletcher – have argued strongly against the EU in its current form.
Just 35 per cent of UK respondents in Juniper's survey felt a Brexit would either have little impact on the tech sector or would have a net positive effect.
Of those who said it would have little impact, 90 per cent felt the global nature of the tech industry means it is largely unaffected by political or geographic boundaries. Eighty per cent who felt Brexit would be a plus for the tech sector fingered less EU red tape as a benefit.
Despite the pro-EU sentiment, Juniper said the Remain campaign may struggle to articulate as single-minded a message to voters as the Leave campaign has.
"Vote Leave has focused effectively on the emotive issue of immigration," said Dr Windsor Holden, head of forecasting and consultancy at Juniper Research. "The combination of financial and economic issues which concern those wary of Brexit cannot as easily be encapsulated and communicated and therefore present a real challenge to those seeking to engage with the public."
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