Arkle Resources PLC (LSE: ARK), a London-listed uranium exploration company, has announced the commencement of its Phase Two drilling programme at the Onyofi Project (EPL 8995) in Namibia's Erongo Region, with the drill rig mobilising to site on 9 November 2026. The programme follows a maiden drilling campaign that confirmed uranium mineralisation in eight of nine holes across a footprint of approximately 1.4 kilometres by 600 metres. CEO Rory Harding, currently on the ground in Namibia, will host an investor webinar on 18 November 2026 to outline the path towards a maiden Mineral Resource Estimate targeted for 2027.

Key Points

  • Arkle Resources PLC (LSE: ARK) is a London-listed uranium and energy metals explorer operating in Namibia, Botswana and Ireland.
  • Phase Two drilling has commenced at the Onyofi Project (EPL 8995), comprising approximately 1,700 metres of reverse circulation drilling on the uraniferous leucogranite target.
  • The programme is expected to take three weeks to complete, with results to be reported as they become available; a maiden Mineral Resource Estimate is targeted for 2027.
  • Investors should watch for assay results, updates from the parallel mapping and trenching programme, and the CEO webinar on 18 November 2026 at 11:00 a.m. GMT.

Phase Two RC Drilling Targets Depth and Lateral Extensions of the Onyofi Uranium Discovery

The Phase Two programme comprises approximately 1,700 metres of reverse circulation drilling designed to test the uraniferous leucogranite system at greater depth, at closer spacing, and laterally beyond the current footprint confirmed by maiden drilling. Arkle's October 2026 discovery established mineralisation extending from surface to almost 200 metres downhole, with the system remaining open at depth. Holes will be surveyed using a downhole radiometric probe and samples submitted for laboratory assay, consistent with the maiden programme's methodology. The company describes Phase Two as the first step towards a maiden Mineral Resource Estimate in 2027. The Onyofi Project adjoins Orano's Trekkopje mining licence in the Erongo Region.

Parallel Mapping, Trenching and Geophysics Programme Extends Across Wider Licence Package

Alongside drilling, a mapping, sampling and trenching programme that began in late September 2026 is continuing through November, systematically evaluating further targets across Arkle's licence package. This includes an extensive uraniferous leucogranite target on EPL 8290. Additionally, three further lines of horizontal loop electromagnetic ground geophysics have been completed over the past week on EPL 8298 to map a large paleochannel target in the north-east of the licence area. Arkle holds an 85% interest in Namibia Uranium (Pty) Ltd, which holds four Exclusive Prospecting Licences covering 540 km² in the Erongo Region, acquired in January 2026.

CEO Rory Harding to Host Investor Webinar on 18 November as Results Pipeline Builds

Arkle's CEO Rory Harding will present a live investor webinar on Wednesday, 18 November 2026 at 11:00 a.m. GMT, following his return from Namibia. The presentation is scheduled to cover the maiden drilling results, how those results compare with established leucogranite deposits in the Erongo Region, the design objectives of the current drilling campaign, additional targets under evaluation, and the uranium market backdrop, which the company characterises as one of a growing supply deficit and record long-term contract prices. The webinar is open to all existing and prospective investors, with questions accepted in advance via Arkle's website or live during the session.