Thank you, David, and welcome, everyone, to Innospec's second quarter 2019 conference call. We are pleased to report another good set of results, which underlines the strength of our strategy and the value of operating with a balanced portfolio. Our core businesses have all performed well during the quarter, most notably our oilfield services business, which has delivered another excellent performance. This quarter, once again, had minimal sales in octane additives compared to the previous year. Excluding octane additives, our operating income increased by 37% and our adjusted EPS is up 40%, which is impressive by any standards. I'm delighted to open with remarks relating to oilfield services. This has been an excellent quarter on both revenue and margins. We delivered sales revenue up 29%, which is better than most in the industry. Our continued focus on improving margins is delivering, with gross margins moving up close to 34%. In addition, with continued cost control, this has translated to operating income which has more than doubled to over $10 million for the quarter. Performance chemicals had a solid quarter, and we remain ahead of schedule against the strategic targets we set out almost three years ago. Sales revenue was down, but this was mainly attributed to lower selling prices driven by a pass-through of lower raw material cost in our contractual business. However, once again, our focus on margins has delivered a further improvement which has resulted in operating income increasing over 13%. The business continues to develop and market very attractive new products, which are well aligned with consumer trends. Fuel specialties sales and margin were broadly flat on a strong comparative quarter. The business suffered a minor disruption to supply and operations in the U.S.A. during the quarter due to a supplier's outage. Our team has worked hard to minimize this issue and return operations and customer service back to normal. These actions have ensured that there are no long-term implications. As previously indicated, sales in octane additives were minimal in the quarter, so operating income was down $5.1 million on the same period last year. So overall, given the headwinds, this has been a very good quarter for Innospec, showing that we have a very sound and strategic foundation for further organic and acquisitive growth. Now I will turn the call over to Ian Cleminson who will review our financial results in more detail, then I will return with some concluding comments. After that, we will take your questions. Ian?