15 min

Presentation: Liz Ratcliffe, Ordnance Survey The Guardian Activate video channel

    • Tech News

Ordnance Survey's Liz Ratcliffe presents at the Guardian's Activate Summit.

  • guardian.co.uk \'a9 Guardian News and Media Limited 2009

Ordnance Survey's Liz Ratcliffe presents at the Guardian's Activate Summit.

15 min

  • guardian.co.uk \'a9 Guardian News and Media Limited 2009

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