Thank you, Jason, and good morning and good afternoon, everyone. Thanks for joining us to discuss Indivior's fourth quarter and full year results. I'll begin with some opening remarks and a review of our growth strategy. Christian will then provide an update on our R&D priorities, following which Ryan will detail our financial performance and our 2024 guidance. Lastly, I'll provide some preliminary thoughts on the process we're initiating to consult on a potential primary U.S. listing in the summer of 2024. 2023 was another year of strong execution and performance by our team. Led by SUBLOCADE, our total net revenue increased 21% to approximately $1.1 billion and adjusted operating profit increased 27% to $269 million. This was our third consecutive year of double-digit top line performance and even after absorbing the incremental costs of the Opiant business and strategic growth investments behind SUBLOCADE, adjusted operating margins increased for the full year. We also made excellent progress against our strategic priorities to create a durable, addiction-focused franchise capable of delivering consistent value-creation for shareholders. I'll highlight the key milestones we achieved in 2023 in a moment. Looking ahead to 2024, we expect another year of strong net revenue growth led by SUBLOCADE. Taking the midpoint of our guidance, $850 million of SUBLOCADE net revenue implies 35% year-over-year growth, marking another major step towards our target of greater than $1.5 million in peak net revenue. This in turn supports the Group's expectations of fiscal year 2024 of delivering 18% overall net revenue growth and approximately 300 basis points of operating margin expansion, again both taken from the midpoints of our guidance range. Importantly, both our performance in 2023 and our outlook for 2024 are in line with the medium-term profitable growth framework that we committed to at our Capital Markets Day in December 2022. Lastly, I wanted to take a moment on the earnings call to provide my perspective on the apparent disconnect between the market data available via IQVIA and our results for SUBLOCADE. This phenomena has occupied a significant amount of investor mind space and has been further reinforced with our fourth quarter and fiscal year results shared today. As I mentioned last year and not dissimilar to some other specialty pharmacy products, it appears as though IQVIA data does not capture our justice systems business, products fulfilled via specialty distributor via buy and bill, and based on our estimates, appears to capture about 25% to 30% of the OHS business, excluding justice systems. For that reason, and has been the case since launch, I can only endorse that you measure SUBLOCADE's performance via results data that we provide at our quarterly earnings. Turning to Slide 6, expanding on our strategic priorities, we delivered on a number of important milestones in 2023. These included growing SUBLOCADE approximately 54% year-over-year to $630 million with the total number of SUBLOCADE patients reaching nearly 137,000 on a 12-month rolling basis. This is an increase of 66% year-over-year. We diversified our revenue base and expanded treatment across the continuum of care through the acquisition of Opiant Pharmaceuticals and subsequently launched OPVEE, our differentiated overdose rescue treatment. Our ex-U.S. business continued to contribute to our growth through new products, including over a 50% increase in net revenue from SUBLOCADE. We expanded our pipeline with two important opportunities targeting opioid use disorder. We took steps to secure our supply chain with the acquisition of a sterile manufacturing facility in the U.S. to support SUBLOCADEs greater than $1.5 billion net revenue goal. And also in terms of securing our future, we settled the antitrust multidistrict litigation and continue to believe that the remaining legal matters are manageable. Our confidence in our future was reinforced by the initiation of $100 million share repurchase program last November. And finally, today's announcement that following our successful listing on Nasdaq last June, we'll be formally exploring making the U.S. the primary trading venue for Indivior shares while maintaining a standard listing in London. As we enter our 10th year as a public company, I want to briefly highlight the compelling fundamentals that support our business and how our team has successfully executed against this backdrop. First, the market in which we participate, broadly defined as substance use disorders, is a terrible global crisis that shows no signs of abating. Looking at our highest value at stake market, the U.S. continues to offer a substantial opportunity for growth and treatment penetration, driven by increased funding and access. Drilling down to Indivior, our business is demonstrating attractive levels of growth and profitability. We've built a stronger addiction-focused franchise with tremendous growth potential. The Indivior of today is an attractive growth platform based on new and proprietary growth products, with an expanded pipeline of exciting potential medicines. Consequently, we're confident in our ability to sustain and build on our position for the benefit of our patients and stakeholders over the long term. The tragic reality is that the needs of our patients have never been greater. Given the evolution of the opioid epidemic and the incidence of substance use disorders more generally, overdose deaths are continuing to reach new record levels. The U.S. is now in the middle of the deadliest phase of the epidemic, fueled by the rise to prominence the powerful synthetic opioids such as fentanyl. The latest data from the CDC suggests the annual overdose deaths in the U.S. are now provisionally reaching over 112,000 lives on a daily basis. This is equivalent to over 300 deaths a day. What's also important to recognize is there continues to be a significant treatment gap with only a minority of patients diagnosed with OUD receiving medically assisted treatment. As shown on this slide, the estimates for the number of those affected and treated vary by source, but our view is that the higher end of these estimates is more reflective of the terrible reality. Indivior's OUD and overdose rescue treatments, SUBLOCADE and now OPVEE place us uniquely at the forefront of this complex and evolving disease space. We think efficacy is the critical treatment attribute for patients, particularly given the high potency of synthetic opioids, and we strongly believe that the unique scientific evidence base for our products makes them true paradigm shifts in treatment. Turning to Slide 9, to execute against this backdrop and reach more patients, we reconfigured our go-to-market strategy in 2020 to focus on organized health systems. This strategy has driven strong double-digit growth over the past three years and the channel now accounts for 80% of SUBLOCADE volume. We continue to make excellent progress against our three-phase growth strategy for SUBLOCADE in this channel, comprised of facility activation, HCP adoption, and ultimately treatment of more patients. Furthermore, we're continuously refining and improving our ecosystem model to help prescribers and patients navigate the complexities and fragmented nature of the OUD treatment landscape. These efforts include building out our regional specialty pharmacy network in order to deliver better customer service to treatment providers, as well as deploying new tools for prescribers and patients. As a result, we expect the organized health system channel will continue to be SUBLOCADE's primary growth driver. A second important refinement to our go-to-market strategy was to build out dedicated capabilities to target the OHS subchannel U.S. Justice Systems. This is critical as it's estimated that over 60% of OUD patients pass through the justice system at some point in their journey. Furthermore, with the recognition that justice system patients are an underserved and high-risk patient group, the environment is improving with increasing access to treatment as well as increased funding availability. Following our investments since 2022, the justice system has become our fastest-growing subchannel and now accounts for approximately 20% of SUBLOCADE's net revenue. With over 600 activated facilities out of 8,000 to 12,000, we believe this channel will continue to grow in importance in fighting the opioid and substance use disorder epidemic well into the future. Taken together, we believe we've created an unrivaled continuum of care that will continue to meet and evolve with the needs of the majority of patients and treatment providers. As we look to 2024 and beyond, we've chosen to strategically resource SUBLOCADE in the US. With our third quarter results last year, we announced the decision to extend SUBLOCADE's reach into the retail channel, which represents an incremental revenue opportunity. This followed the removal of the DATA 2000 waiver in December 2022, which is an important step to open up the potential alternate sites of care. We successfully trialed this approach through our relationship with Albertsons, the second-largest supermarket chain in North America. The pilot clearly indicated the value to smaller prescribers for alternate sites of care and our network now operates approximately 1,160 locations across 20 states. We look forward to creating a nationwide network with additional partners in the future. We've also made the decision to invest further in justice system team building up on a strong performance and access achieved to date. And lastly, we see a clear opportunity to provide additional medical and scientific inquiry support, to help advance OUD disease state awareness and to engage key opinion leaders and clinicians with the differentiated science behind SUBLOCADE. To do this, we increased the size of our medical science liaison team. I'm confident that these strategic growth investments are scalable and will help us accelerate our progress towards our peak net revenue aspiration of greater than $1.5 billion. Moving from SUBLOCADE to our other proprietary growth opportunities, let me start with OPVEE, where I'm pleased to say that our launch is fully on track. We continue to believe that this product has the ideal profile to address the epidemic of overdoses caused by both natural and synthetic opioids. We have a multifaceted commercial strategy which includes an approved experience program for states that are allowed to trial OPVEE within their populations. We're also leveraging our government affairs team to ensure that these state standing orders, grants and emergency medical service protocols are updated to include OPVEE as an overdose rescue treatment. And we were pleased to have secured a 10 year contract with BARDA that is potentially worth approximately $110 million, including funding for Phase IV clinical studies, a year-one order of $8 million in revenue for 100,000 units, and options for similar orders over an additional nine years. Our 2024 guidance includes $20 million of net revenue from OPVEE at the midpoint, reflecting the early establishment phase for this important life-saving medicine, and we continue to expect peak net revenue in the range of $150 million to $250 million. Moving now to PERSERIS, it's fair to say that we did face some significant challenges in the last couple of quarters of 2023 as a result of competitive pressures from a well-funded new market entrant. We nevertheless continue to believe in the potential of the important medicine for schizophrenia based on its differentiated clinical profile and strong feedback we get from clinicians. Furthermore, since we expanded the field force nationally in 2022, we've seen increases in market coverage and penetration. Entering 2024, we believe the team is regaining share of voice across targeted prescribers and volumes at the start of the year are building on the growth achieved in the fourth quarter. As a consequence, our guidance for 2024 is for strong double-digit net revenue growth, as Ryan will detail later. On my final slide, I just wanted to remind you of the key elements of the medium-term profitable growth framework that we provided in December 2022. As you've seen today, we delivered against this in fiscal year 2023 with 21% net revenue growth and over 100 basis points of adjusted operating margin expansion. And as we achieved this operating leverage while also acquiring and integrating the Opiant acquisition, which is both strategically and financially attractive, albeit with dilution of $40 million in OpEx or 400 basis points in 2023. Our fiscal year 2024 guidance indicates another year of significant progress towards meeting these medium-term goals. With that, I'll hand over to Christian for his R&D review.