A group of motorcyclists, who were riding with Bradford solicitor Helen Slater and her husband when they were thrown from their machine and killed, have all admitted dangerous or careless driving.

Mrs Slater, 37, who worked for Bradford law firm Alistair Bateman and Co, and her builder husband Dean, 40, died after their motorcycle was in collision with a car on the eastbound slip road of the A64, near Tadcaster, North Yorkshire, in August 2010.

The couple, of Thornton, Bradford, had been travelling in a group with five other motorcyclists when the accident happened, with Mrs Slater riding pillion behind her husband.

The other bikers – Ian Towson, 33, of Leafield Crescent, Eccleshill; Paul Wheater, 31, of Halifax Road, Cullingworth; Michael Hannon, 28, of Etna Street, Great Horton; Dax Lerman, 30, of Rycroft Avenue, Bingley; and David Hastings, 39, of Clough Fold, Keighley – were originally charged with causing the deaths of the Slaters by dangerous driving.

In December 2011, a judge dismissed the charges against all five men. But they were then all charged with dangerous driving. Last September, Wheater and Lerman pleaded guilty to that charge. The other three defendants were sent to Teesside Crown Court.

This week Towson, Hannon and Hastings appeared at Teesside Crown Court and pleaded guilty to careless driving.

A court spokesman said the case of all five defendants would now be transferred back to Bradford Crown Court for sentencing at a date to be fixed.

The Slaters, who had recently moved to Cottingley, Bingley, were killed a week after celebrating their second wedding anniversary when their bike was in collision with a Vauxhall Vectra.

Mrs Slater was part of the mental health department at Bateman’s solicitors, and represented clients at crown and magistrates courts.