Notice of General Meeting

ViaLogy PLC ("ViaLogy" or "the Company")

Notice of General Meeting

London, May 23, 2012. Further to the announcement of 21 May 2012 ViaLogy PLC (AIM: VIY), a provider of reservoir characterization, geophysical imaging and hydrocarbon sizing services to global oil and gas Exploration and Production (E&P) companies based on proprietary, patented active signal processing technology, has today posted to shareholders a circular relating to the placing of 36,363,637 ordinary shares at a price of 2.75p each ("the Placing Shares") and convening a General Meeting, which will take place at the office of Seymour Pierce Limited, 20 Old Bailey, London EC4M 7EN at 10 a.m. on 15 June 2012.

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About ViaLogy:

ViaLogy provides reservoir characterization, geophysical imaging and hydrocarbon sizing services to global oil and gas customers based on proprietary, patented active signal processing technology. ViaLogy's QuantumRD platform assists clients in de-risking prospects over a broad range of subsurface lithologies and complex stratigraphies to generate drilling targets, position offsets and enhance recovery.

ViaLogy's core technology rapidly and accurately detects weak signals buried in high noise background and clutter, and is applicable to active/passive seismic, electromagnetic and magneto telluric data. By exploiting normally disregarded noise variations induced by changes in porosity, fluid presence and permeability across the formation, and adding computer-designed noise to the data, ViaLogy is able to amplify subtle noise variations to enhance areal and depth resolution in complex lithologies that are not achievable through conventional means. For more information on ViaLogy, visit www.vialogy.com