Motorist has the option to substitute a blood or urine specimen for breath in borderline cases but the constable chooses which. The guidelines in this case have now been clarified in the House of Lords decision DPP v Jackson : Stanley v DPP (1998) Times, July 30, 1998.
HL (Lord Bridge of Harwich, Lord Roskill, Lord Goff of Chieveley, Lord Jauncey of Tullichettle)
05/11/1992