Scottish business MacRebur and London-based bio-bean beat off competition from thousands of entries to win the Virgin Media Business VOOM 2016 awards.
MacRebur manufactures road asphalt out of waste, creating a longer lasting product, that is 60% stronger than standard asphalt.
Clean technology firm bio-bean recycles waste coffee grounds into sustainable biofuels, processing 50,000 tonnes of waste a year.
Virgin founder Sir Richard Branson said: "I love seeing entrepreneurs pitch an idea to me which they are incredibly passionate about and it was both a difficult and inspiring task to choose just two winners.
"All the finalists of the Virgin Media Business VOOM competition showed they have the dedication and intense desire to take their business to incredible heights and I believe they will all do so."
Now in its fifth year, VOOM 2016 - run by the ultra-fast business broadband company - is the UK and Ireland's biggest and most valuable pitching competition.
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