Motorists convicted on the evidence of "illegal" speed cameras are to find out if they will be able to claim compensation and have points and bans rescinded.
A test case at Manchester Crown Court claims that since 1992, the law introducing the cameras in Britain had been wrongly implemented by the Home Office. The ruling in the case is expected on Wednesday afternoon.
Aitken Brotherston, 61, of Lymm, Cheshire, is also appealing a conviction for speeding on the grounds that the LTI 20/20 Speedscope laser gun provided an inaccurate reading.
His defence barrister, Michael Shrimpton, told the court that each home secretary since Michael Howard had been wrong to pass such devices as the LTI 20/20 without Parliamentary scrutiny.
He also said that Mr Brotherston's car could not have been travelling at 52mph as alleged because a car behind him travelling at a similar speed was clocked at 45mph.
Mr Brotherston received three penalty points and was fined £250 with £2,800 costs after being photographed on Princess Parkway in Manchester in 2006.
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