2 On 1 October 2001 the applicant pleaded not guilty to one count of being knowingly concerned in the importation into Australia of prohibited imports consisting of a commercial quantity of heroin contrary to s.233B(1)(d) of the Customs Act (Cth) 1901. The maximum penalty for this offence was life imprisonment. After a trial of some twenty days duration, in which the applicant did not call any evidence, on 2 November 2001 the jury returned a verdict of guilty. After a plea in mitigation the judge on 16 November 2001 convicted the applicant and sentenced him to fifteen years' and three months' imprisonment. A non-parole period of eleven years and three months was set. The applicant now seeks leave to appeal against both conviction and sentence on grounds to which I shall turn shortly. I shall deal first with the application touching conviction.
The prosecution case
3 In the first week of December 1995 a package containing 2.996 kg. of pure heroin arrived in Australia, having been sent from Bangkok to an address in Springvale. On 8 December, the package was delivered by Federal Express Courier and accepted by a Vietnamese-born man, long a resident of France, Simon Le Duc, who was waiting for the package and accepted delivery of it.
4 Le Duc was employed as a waiter in Marseilles. However, earlier in 1995, Le Duc had accepted an offer from a restaurant proprietor, one Ah Kiet (also known as François Vann La) to travel to Melbourne and await the delivery of a consignment
of heroin. By 8 December, Le Duc had been waiting in an unfurnished house in Springvale for almost three months, and for the first eight to ten weeks had been doing little else. He was regularly paid wages for waiting and bonuses totalling several thousand dollars. Le Duc's wages were paid to him by Jan Ha Le Trinh, the sister-in-law of François Vann La and the elder sister of the applicant. Jan Ha conducted a wholesale and retail children's clothing business in Abbotsford, known as Rainbow House.
5 The applicant was ordinarily a resident of Melbourne. However on 20 January 1995 he left Australia for Hong Kong stating on his outgoing passenger card that he intended to stay abroad for fourteen days visiting friends and relatives in Hong Kong. The applicant spent the remainder of 1995 living and travelling in Thailand, Hong Kong, Vietnam and/or Singapore.
6 It was the prosecution case that the applicant, François Vann La and Jan Ha were all knowingly concerned in the importation of a commercial quantity of high grade heroin from Thailand to Melbourne. The prosecution alleged that each family member played a separate, interdependent and important role. The applicant was alleged to be the originator and architect of this importation, arranging the purchase and export of the heroin from Thailand. François Vann La recruited the services of Simon Le Duc and was the major conduit of information as between the applicant and Le Duc. Jan Ha was primarily responsible for the collection, management and disbursement of the applicant's funds in Melbourne, for the receipt and transmission of substantial funds to Thailand and Hong Kong, and for assisting, paying and dealing with Simon Le Duc whilst he was present in Melbourne.
7 It was the prosecution case that the services of Le Duc, as a person from France without connections in Melbourne, were obtained in order the better to insulate the three family members from the risk of detection and apprehension. In particular Le Duc was to fulfil the essential role of the receiver of the heroin upon its delivery in Melbourne. Le Duc had already travelled from France to Melbourne on an earlier occasion in 1995, on which he had taken up residence at the same Springvale address and awaited the arrival of a consignment of heroin. François Vann La had also visited Australia at that time. On this first occasion the intended consignment of heroin had not arrived, and Le Duc had instead been directed by François Vann La to take delivery of and to store, divide and distribute a quantity of heroin which had previously been imported, and then collect payment and remit moneys to persons including François Vann La and Jan Ha.
8 It was alleged that Jan Ha in turn had arranged for the transmission of moneys overseas to Bangkok and Hong Kong, often to accounts held in the name of Orawan Chaloensap, the sister of the applicant's ex-wife. These international transfers were made in a manner designed to avoid the reporting requirements of the Financial Transaction Reports Act (Cth) 1988 and to distance Jan Ha from any involvement by her in these transactions. For this purpose Jan Ha employed other persons to negotiate most of these international money transfers. These transfers were then completed by persons who provided false details, used different banks, and always transferred amounts less than $10,000 so as to avoid the banks' statutory obligations to report transfers.
9 Le Duc was apprehended on the day he took delivery of the package of heroin on 8 December 1995. He admitted his guilt and agreed to assist investigating authorities by providing information and undertaking to give evidence. Le Duc then gave evidence on behalf of the prosecution upon the trial of the applicant and on the earlier trial of Jan Ha. He had already been sentenced to a term of imprisonment in the County Court of Victoria when the applicant's trial began.
10 Le Duc said in evidence that he had met "the boss" (the applicant) in Bangkok over a period of days, and that they spoke about issues arising out of Le Duc's criminal activities during his first trip to Australia. Le Duc said that the applicant assured him that on his second trip to Australia, his role was simply to "go to Australia and wait for [the applicant] to send the good [sic] (and sign for them)". Le Duc gave evidence that the applicant paid or authorised Le Duc's wage and expense payments while he was in Bangkok and Australia. Le Duc also stated that it had not been originally envisaged that he would fulfil any role as a collector of moneys in Australia and so he was paid a bonus when he performed these activities. He gave further evidence regarding his own assigned role in relation to the charged importation and in particular swore that two recorded telephone conversations on 8 December 1995 were between himself and the applicant and concerned the division and distribution of the delivery of heroin which had arrived earlier on 8 December. Le Duc gave evidence of earlier telephone conversations between himself and the applicant. Le Duc also identified the applicant in May 1996 from a photo board of twelve Asian male faces, at a time when Le Duc had been in custody since 8 December 1995 and the applicant had not yet returned to Australia.
11 From September 1995 onwards, warrants were issued by judges of the Federal Court of Australia for the interception of telephone calls on several services including the mobile telephone service for the clothing business conducted by Jan Ha and, later, the mobile telephone service for Simon Le Duc. Between September and December 1995 a large number of telephone calls were monitored, recorded and translated, between the applicant and Jan Ha, and in particular two calls in the Vietnamese language between the applicant and Le Duc on 8 December 1995. It was the prosecution case that the applicant telephoned Le Duc on 8 December to provide initial instructions as to how the consignment of heroin was to be divided and distributed. One of the primary issues in the case was whether the voice attributed to the applicant in the numerous intercepted telephone calls was that of the applicant. The prosecution claimed that a close analysis of these telephone calls led inescapably to the only reasonable inference that the applicant was the person speaking. Furthermore a number of more specific factors were relied on as linking the applicant to these telephone calls.
12 The recorded telephone conversations included a number of recurring themes. The prosecution alleged that the applicant and the persons to whom he spoke were acutely conscious of the potential for the interception of these telephone calls by investigating authorities. As a result the conversations were often heavily coded using a variety of expressions and other devices. Conversations of a particularly sensitive nature were conducted using public telephone services rather than the available intercepted services. Telephone numbers were kept secret from other persons involved at the periphery of the importation (including Le Duc) and even from the applicant's parents. The prosecution alleged that a close analysis of the transcribed telephone calls again led inescapably to the only reasonable inference that the applicant was knowingly concerned in the importation of heroin into Australia, and indeed that he instigated that importation and directed others including Jan Ha, François Vann La and Simon Le Duc as to their respective roles in the furtherance of that importation.
The proceedings in Hong Kong
13 On 17 February 1996 the applicant was arrested in Hong Kong. He was then held in custody until he made his first appearance at the Western Magistracy in Hong Kong on 19 February 1996. On 17 April 1996 Australian extradition evidence was formally filed in Hong Kong along with an authority to proceed signed by the Governor and the substantive extradition hearing was then fixed for 29-31 July. On 30 July 1996 at the conclusion of the contested extradition hearing, the applicant was committed to custody awaiting his surrender to Australian authorities. The applicant filed applications for judicial review and appeals to the Hong Kong Court of Appeal but these were all rejected and the final order for the applicant's surrender was signed by the Chief Executive of the Hong Kong Special Administrative Region on 5 December 1997. On 12 December 1997 the applicant arrived in Australia in the custody of officers from the National Crime Authority. The order for surrender issued in Hong Kong was made pursuant to s.31(1) of the Fugitive Offenders Ordinance (No. 23 of 1997). It was thereby ordered that the applicant be surrendered to Australia in respect of the following offences:-