Thank you for standing by and welcome to the Autosports Group Limited H1 2024 FY results. All participants are in a listen-only mode. There will be a presentation followed by a question-and-answer session. If you would like to ask a question, you need to press star one. I would now like to hand the conference over to Mr. Nick Pagent, CEO.
Everybody, good morning, and thank you for dialing in for the investor presentation for the financial results of Autosports Group for the period, H1 2024 financial year. My name is Nick Pagent. I'm the CEO of Autosports Group, and joining me today on the call is Aaron Murray, the CFO of Autosports Group. This morning, we'll start with a brief presentation on Autosports Group covering our H1 2024 financial year highlights, our strategic highlights and objectives, our outlook through to the calendar year 2024. I'll summarize our 2024 H1 trading results before handing over to Aaron, who'll provide a deeper analysis of Autosports Group's financial metrics, including our revenue drivers, our stable gross margin production, stable OpEx ratios, our normalized profit before tax and EBITDA margins, cash flows, and capital management priorities.
I'll then give an update on Autosports Group's consistent growth strategy, and following the presentation, Aaron and I will open up the call to any questions that you have. As we move through the presentation launched this morning on the ASX and Autosports' own investor sites, I will, where possible, note the relevant slide number for anybody following the pack. Starting with our 2024 H1 highlights on slide three, I'm pleased to report that Autosports Group has delivered a consistent financial result, which reinforces our prestige and luxury brand strategy and gives us confidence that Autosports Group will continue to outperform in today's normalized market conditions. Our growth strategy has continued to drive balanced revenue growth at 26% above the December 2023 outcome and above our forecasts from our December 2023 AGM.
The market for prestige and luxury cars has remained resilient as supply has returned, with orders written in Autosports Group up 11% on a strong prior corresponding period. These orders continue to support our solid order book. Revenue flowed nicely from the revenue line to the gross profit line, which was up 20% to AUD 264.8 million as Autosports continued to deliver consistent gross margins in the normalized supply market. EBITDA was also up 20.1% on PCP to AUD 107.8 million for the period. Net profit before tax and net profit after tax were impacted by higher interest rates and the AASB 16 lease impacts for the period, with our normalized net profit before tax ahead of the range forecast in our December AGM. The combination of our strong operating profit, consistently high cash conversion, and positive outlook has allowed Autosports Group to further improve its dividend to shareholders.
Today, we're declaring an interim dividend of AUD 0.10 per share, fully franked, a rise of 11.1% on the prior corresponding period. If we turn now to slide four to look at the strategic highlights last period, the consistent delivery of Autosports Group's growth strategy continues to deliver a strong platform for growth. As Autosports has grown, the consistency of this strategy has strengthened the business, broadened our platform for future growth, and enhanced our resilience, particularly in today's normalized trading conditions. Indeed, it is in these normalized trading conditions that Autosports' tight brand strategy gives us the opportunity to outperform. We are confident that our brands have resilient customer bases. They're future-ready with their product portfolios. They're stable with high revenue and high margin potential. They have lower risks of disruption. And, of course, they have the opportunity for meaningful segment consolidation.
These beliefs have been reinforced by market conditions in the H1 of FY 2024. During this period, we've seen vehicle supply free up across the industry. New vehicle margins have normalized. The mix of front-end vehicle sales and back-end service and parts gross profit has also normalized. Within this, Autosports Group has seen increasing customer demand, with an 11% rise in our order write during the period against a very strong PCP. We've seen stable gross margins, and we've seen tailwinds continuing in our service and parts divisions. Despite inflationary pressures, Autosports' cost base has stayed stable, allowing revenue growth to flow through the P&L. Controllable costs have been well managed during the period. Inflationary pressures are reducing. Interest costs have also impacted and impacted the PBT growth for the period.
However, most of the interest rate rises were complete by March 2023, so the H2 2024 increase is not expected to be as significant. Autosports growth continues to be driven by high-quality luxury brands and high-margin acquisitions. In FY 2023, we saw just over AUD 280 million in revenue coming from acquisition-led growth. In H1 2024, we saw AUD 153 million in growth coming from the cycling annual growth from acquisitions. We can also report an improved line of sight on our calendar year 2024 and calendar year 2025 acquisition opportunities. Given these opportunities, our capital management priorities remain simple. Strong operating cash flows will be applied to debt repayment, shareholder returns, and dealership acquisition opportunities, which brings us to slide number five in our outlook for the next period. New vehicle supply and resilient luxury demand should enable.