I've never heard of different laws for driving in Scotland to England. Link please.
".....and yes, I do know what I am talking about: I also drive for the emergency serives and claim exemptons under the above act everytime I drive so I know the law very well...... "
Yet you don't know the laws in Scotland are different to that of England?
As an instructor I work in both Scotland and England. English police driver training is governed by ACPO guidelines and covered by certain exemptions under S87 of the Road Traffic act as you have already mentioned but are you also aware there is a new law covering exemptions as set out in a clause in the road safety bill? Emergency services driver training in England also usually involves one or more of the following, Department of Transport, DTAG (Ambulance), Fire & Rescue DTP, IAM, RoSPA and DSA so a consistant level of training is given accross all the services.
A lot of English police driver pursuit training is now being done at race circuits and rally stages as the traffic cars move towards the use of Subaru and Mitsubishi and its only in these conditions you can teach people how to control these type of cars properly. Also it is safer if it goes wrong as no members of the public are present. Police driver training is more advanced than that of the other emergency services as at its highest level covers pursuit driving and TPAC manouvres something the other services do not have to deal with. The only way to get this correct is practice, practice, practice and yet more practice.
Different ball game in Scotland with regards to traffic law and training, there are a whole host of offences that exist in Scotland but not in England, Police Driver training is governed by ACPOS and different exemptions apply according to the different acts passed by the Scottish Parliament. Just as in England as there are exemptions under other acts too and not just S87 of the RTA. What you have to remember is that Scotland has an area of 78,772 square kilometres but only has a population of 5 million, there are no motorway networks North of Perth so the majority of driving is on A or B roads. Now compare that to England, London itself has a population of 7.6 million the whole of England around 51 million in an area only 30% bigger than Scotland. So why would you have the same traffic laws when the conditions are completely different? This was the whole point of the Scottish Parliament to pass laws and acts that were relevant to their country and not have to rely on the c*ap thrown out by Westminster that had no relevance whatsoever North of Watford Gap.
Please feel free to go through the statutory instruments for both Countries where you will find these but I would recommend you read "Road Traffic Law in Scotland 4th Edition "by John Wheatley QC this is the bible on Scottish Motoring law and the one all the lawyers, Barristers and Procurator Fiscal use (remember also no CPS in Scotland)
The drives described earlier certainly broke none of the guidelines I have been exposed to or operated under in Scotland. As a civilian instructor I am not exempt from either countries road traffic laws so all my high speed instruction has to be done on race circuits or the polices own private facilities. Before any training course I always seek expert legal advice as to what is allowed by law in that particular country ( as I also work in Europe too)
But what you have to remember is that although the driver may be exempt from speeding he is not exempt from Careless or Dangerous driving! in either Country.
And before you ask no I am not Scottish but I do sympathise with the English Cr*p they have had to put up with for years.