Ian Tyler's contracting giant is now just a few hundred million shy of an eight-digit turnover, and is more than ВЈ4bn bigger than closest challenger Carillion, which itself recently passed the ВЈ5bn mark.
Laing O'Rourke remains in third, while Morgan Sindall noses past Kier into fourth.
Further down the ladder, Wates, Rok, Enterprise and Keller have all joined billionaires row.
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Other contractors doing well include Apollo, which rockets 30 places up the charts from 94th to 64th,
But it is mainly the facilities management and specialists that are making headway up the table: Mears moves up to 36th after a 38% increase in turnover; PC Harrington climbs to 73rd with turnover jumping a third; T Clarke is up to 61st; and Imtech rises to 69th.
In the basement battle, Old House Group has been relegated, while Bullock is a new face in the top league at 82nd after turnover leapt ВЈ50m to ВЈ182m.
In the misery league, aka the Top 25 House Builders table, Barratt has taken over at the top from Taylor Wimpey after the latter's turnover dropped almost half a billion to ВЈ3.47bn. TayWimp now props up the table when arranged by profit, with a whacking loss of almost ВЈ2bn.
Third-placed Persimmon 'enjoyed' similar fortunes, with turnover halving to ВЈ1.76bn, and a nasty deficit of ВЈ780m putting it only one place above TayWimp in the profit table.
The Top 20 Plant Hirers table looks a little less bleak, with Lavendon climbing one place to 5th after turnover rose 34% to ВЈ248m. The powered access hirer swaps places with Hewden Stuart, which suffered an ВЈ81m drop in turnover and posted a ВЈ200,000 loss.
