"It is very unsatisfactory in this court be asked on an application for a prerogative order to deal with proceedings in a lower court which have not run their course so that the application is in respect of an interlocutory matter ..... I think that the right course here would have been for the prosecution to go on with their case accepting with good grace the justices decision and then if, at the end, the prosecution failed, they could come here on a case stated and we should have a firm basis of fact on which to decide the issues ..... The obligation of this court to keep out of the way until the magistrate has finished his determination seems to me to be a principle properly to be applied both at summary trial and to committal proceedings."
"Moreover even today it seems to me that there are powerful reasons for accepting the guidance offered by Buck. It is of the utmost importance that the course of a criminal trial in the Magistrates' Court should not be punctuated by applications for an adjournment to test a ruling in this court, especially when in reality if the case proceeds the ruling may suddenly turn out to be of little or no importance. In the present case the district judge has yet to rule in relation to Section 78. If her ruling were to favour the claimant the prosecution would fail. That may or may not be a realistic possibility, but I am satisfied that even when, as here, there is an important substantive point which arises during a trial this court should not and indeed cannot intervene. The proper course is to proceed to the end of the trial in the lower court and then to test the matter, almost certainly by way of case stated."
"I accept that that [referring to Buck] is the normal rule, but in this, as in some other cases, the prosecution would no doubt say at the conclusion of a trial resulting in a conviction that it was too late for the claimant to complain about an adjournment that should not have been granted before. In a case such as this, where the issue is straightforward and the principle clear, I do not see that there is any fetter on this court intervening."
"(1) Evidence of the proportion of alcohol or a drug in a specimen of breath, blood or urine may, subject to sub-sections (3) and (4) below and to Section 15 (5) [and (5A)] of this Act, be given by the production of a document or documents purporting to be whichever of the following is appropriate, that is to say - (a) a statement automatically produced by the device by which the proportion of alcohol in a specimen of breath was measured and a certificate signed by a constable (which may but need not be contained in the same document as the statement) that the statement relates to a specimen provided by the accused at the date and time shown in the statement, and (b) a certificate signed by an authorised analyst as to the proportion of alcohol or any drug found in a specimen of blood or urine identified in the certificate."
"(3) Subject to sub-section (4) below - (a) a document purporting to be such a statement or such a certificate (or both such a statement and such a certificate) as is mentioned in sub-section (1) (a) above is admissible in evidence on behalf of the prosecution in pursuance of this section only if a copy of it either has been handed to the accused when the document was produced or has been served on him not later that seven days before the hearing, and (b) any other document is so admissible only if a copy of it has been served on the accused not later than seven days before the hearing."
"(6) A copy of a certificate required by this section is to be served on the accused or a notice required by this section to be served on the prosecutor may be served personally or sent by registered post or recorded delivery service."
"(7) In this section 'authorised analyst' means - (a) any person possessing the qualifications prescribed by regulations made under [Section 27 of the Food Safety Act 1990 ] as qualifying persons for appointment as public analysts under those Acts, and (b) any other person authorised by the Secretary of State to make analyses for the purposes of this section."
"The court does not accept the prosecution submission that because the word 'may' in sub-section (1) ofSection 16 Road Traffic Offences Act 1988 is used, an analyst does not have to be authorised as defined by sub-section (7) of the Act. ..... the word 'may' is used in conjunction with the words 'whichever of the following is appropriate' that is to say - (a) and (b)'. Sub-section (6) says 'a copy of the certificate is required by this section to be served .....'. The court was referred to page 4.257 Wilkinson Road Traffic Offences which says analyses of blood or urine specimens are required to be made by an authorised analyst ..... " and it concludes - "