i was arrested at home after a tip off, I had been out for a works do and admited drinking 1 pint lager 1 bottle of lager and 1 glass of wine over 4 hour period i had been at home for 1 hour when police arrived i blew 56 at home and 50 at station where blood was then taken, i had 2 x 275 ml glasses of wine at home prior to police visit, the officer took the glass and empty bottle. i have been bailed for 6 weeks. i was told they would back calculate and assess blood. no previous convictions. Please advise my chances.