Thanet Council is being sued by live animal exporters for loss of earnings during last year's ban on using Ramsgate port.
The ban was put in place after more than 40 sheep had to be put down. But the suspension was overturned following a High Court ruling which sparked a series of protests.
The case is due to be heard in another division of the High Court with three Dutch companies pursuing claims against the Council.
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The expansion of the probe came as Jeremy Corbyn declared Carillion's demise a "watershed moment" that should end "rip-off privatisation".
Tuesday afternoon's weather for the west of the region
Tuesday afternoon's weather for the east of the region