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Author of BBC BASIC (Z80), BBC BASIC (x86), BBC BASIC for MS-DOS, BBC BASIC for Windows, BBC BASIC for SDL 2.0 (for Windows, Linux, Mac OS-X, Android and Raspberry Pi).

Author of LB Booster and QBasic to BBC BASIC translator.

Developer of Colour Recovery technology for extracting the original chroma from a black-and-white film recording.

For 33 years an engineer at BBC Research and Development Department; projects included the development of on-screen clocks, 2D DVE for Virtual Production, Free-D real-time camera tracking technology and the Transform PAL Decoder.