Facts
8 The factual circumstances were accurately summarised in paragraphs (6) to (8) of the Crown's written submissions which it is convenient to reproduce:-
"6. …
In October 2004 Dr Sabah Aziz who was a dentist, filled a tooth for the respondent at his surgery; on two later occasions in 2004 he performed minor corrective work for the respondent without further charge; the respondent asked Dr Aziz to remove a sound tooth and Dr Aziz refused to do so.
On 19 March 2005, in an aggressive mood, the respondent returned to Dr Aziz's surgery, opening the door forcefully, and argued with Dr Aziz, complaining about his workmanship and Dr Aziz's lack of professionalism. He threatened Dr Aziz saying something like 'You wait and fucking see, you will not get away with this'.
Count 2:
Some time before 3 a.m. on Monday 7 November 2005 while Dr Aziz and his family were asleep upstairs, the respondent taped to the window of a downstairs sitting room a mortar device, which was a firework designed for use in the pipe. If set off when not in the pipe, its behaviour was unpredictable, and people nearby could suffer serious injury, including losing a limb, and people within 5 metres would suffer temporary, and perhaps permanent, hearing loss and perhaps damage to their eyes.
Between 2.45 a.m. and 2.55 a.m. that day the respondent lit the device and it exploded, breaking two panes of glass and waking the family.
The police were called, and, because the family feared that someone was downstairs inside the house, they waited in an upstairs bedroom until the police arrived.
Count 5:
The respondent then went to 10 Polding Street North, less than 2 kilometres from Dr. Aziz's house and taped another mortar device to a bedroom window in a home occupied by the Yurchenko family and at about 3 a.m. or a few minutes past exploded it; no damage was done to the window. The respondent set off the mortar device there as a decoy to allow him time to place and set off a larger device at Dr Aziz's surgery, and possibly in an attempt to shift suspicion from himself.
Count 3:
The respondent then drove to Dr Aziz's surgery in The Boulevard, Fairfield, about 500 metres from Dr Aziz's home where he attached another larger mortar, 75 millimetres or larger, to the door and exploded it; the explosion caused damage to the surgery door.
Count 4:
The respondent entered his Porsche car and sped off down Station Street, heading towards Sackville Street. Police officers pursued the car and saw it pass through a red light as it turned into Sackville Street; he was stopped in Polding Street. Police officers saw a jerry can in the car and arrested the respondent. During a search of a car police officers found two 65 millimetre mortars in a plastic bag behind the passenger's seat and next to it a plastic bag containing four drink bottles of petrol. On the back seat police officers found fire blankets and homemade protective devices including a cap lined on the inside with foil and other items made out of foil; he had the fire blankets and protective devices to protect him from the possible consequences of setting off the mortar devices. Police officers also found gloves, which the respondent had for protection and in order not to leave fingerprints.
When he was searched, police officers found that the respondent was wearing a homemade protective device around his groin, to protect his genitals from damage should anything go wrong while he was committing the offences.
At a search at the respondent's home that afternoon, police officers found mortars similar to those found in his car and protective devices, including a vest like device which he had designed to test as a protective device when letting off the mortars at his home.
About two weeks before the commission of the offences a neighbour had heard explosive like sounds from the respondent's home and on one occasion saw a flash occur there; the respondent had set off some mortar devices at his home before the commission of the offences.
7. The offences were committed at a time when the respondent must have appreciated that people were likely to be inside each of the two houses but he chose a time when there would be few people out and about in the streets, in order to avoid detection.
8. Extensive amounts of debris were found after the explosions; repairs to Dr Aziz's house and surgery cost over $11,000."