practise directions and bristol v young

• practise directions 3 and 4
• prior to practise directions - supreme court was bound by itself - would have to pass new act to change law
• what do practise directions cover - changes in law
• first use of practise directions - british railways board v herrington - overruled addie v dumbrek - duty owed to tresspassers
• civil division - bound by civil decisions only
• young v bristol areoplanes civil division is bound by itself except 3 situations
• 3 exceptions - decision made per incuriam - two conflictign decisions - decision of supreme overrules coa
• per incuriam - by error / lack of care
• per incuriam example - williams v fawcett - error in understanding the county court rules