With the end of 2015 in sight, we asked Whitehall's top officials to review the year, set out their priorities for 2016 – and shed some light on their festive plans. Sir Derek Jones, permanent secretary of the Welsh Government, takes part in our biggest-ever perm secs' round-up series...

With the end of 2015 in sight, we asked Whitehall's top officials to review the year, set out their priorities for 2016 – and shed some light on their festive plans. Ordnance Survey chief executive Nigel Clifford takes part in our biggest-ever perm secs' round-up series...

With the end of 2015 in sight, we asked Whitehall's top officials to review the year, set out their priorities for 2016 – and shed some light on their festive plans. National Savings & Investments (NS&I) chief executive Jane Platt takes part in our biggest-ever perm secs' round-up series...

With the end of 2015 in sight, we asked Whitehall's top officials to review the year, set out their priorities for 2016 – and shed some light on their festive plans. Civil service chief executive and Cabinet Office permanent secretary John Manzoni takes part in our biggest-ever perm secs' round-up series...

With the end of 2015 in sight, we asked Whitehall's top officials to review the year, set out their priorities for 2016 – and shed some light on their festive plans. Sir Jeremy Heywood, cabinet secretary and head of the civil service, takes part in our biggest-ever perm secs' round-up series...

With the end of 2015 in sight, we asked Whitehall's top officials to review the year, set out their priorities for 2016 – and shed some light on their festive plans. Department for Education permanent secretary Chris Wormald takes part in our biggest-ever perm secs' round-up series

With the end of 2015 in sight, we asked Whitehall's top officials to review the year, set out their priorities for 2016 – and shed some light on their festive plans. Major Projects Authority chief executive Tony Meggs takes part in our biggest-ever perm secs' round-up series

With the end of 2015 in sight, we asked Whitehall's top officials to review the year, set out their priorities for 2016 – and shed some light on their festive plans. Martin Donnelly, permanent secretary at the Department for Business, Innovation & Skills (BIS) takes part in our biggest-ever perm secs' round-up series

With the end of 2015 in sight, we asked Whitehall's top officials to review the year, set out their priorities for 2016 – and shed some light on their festive plans. Charity Commission chief executive Paula Sussex ​ takes part in our biggest-ever perm secs' round-up series...

With the end of 2015 in sight, we asked Whitehall's top officials to review the year, set out their priorities for 2016 – and shed some light on their festive plans. Melanie Dawes, permanent secretary of the Department for Communities and Local Government, takes part in our biggest-ever perm secs' round-up series...

With the end of 2015 in sight, we asked Whitehall's top officials to review the year, set out their priorities for 2016 – and shed some light on their festive plans. Ruth Owen, head of the government's Operational Delivery Profession​, takes part in our biggest-ever perm secs' round-up series...

With the end of 2015 in sight, we asked Whitehall's top officials to review the year, set out their priorities for 2016 – and shed some light on their festive plans. Mark Lowcock, permanent secretary of the Department for International Development, takes part in our biggest-ever perm secs' round-up series...