What episodes of Doctor Who are lost forever?

Currently still missing following the BBCs decision to over write many hours of records in 1970

004 Marco Polo 7 / 7 All

008 The Reign of Terror 2 / 6 4, 5

014 The Crusade 2 / 4 2, 4

018 Galaxy 4 3 / 4 1, 2, 4

019 "Mission to the Unknown" 1 / 1 All

020 The Myth Makers 4 / 4 All

021 The Daleks' Master Plan 9 / 12 1, 3, 4, 6, 7, 8, 9, 11, 12

022 The Massacre of St Bartholomew's Eve 4 / 4 All

024 The Celestial Toymaker 3 / 4 1, 2, 3

026 The Savages 4 / 4 All 4 33

028 The Smugglers 4 / 4 All

029 The Tenth Planet 1 / 4 4

030 The Power of the Daleks 6 / 6 All

031 The Highlanders 4 / 4 All

032 The Underwater Menace 2 / 4 1, 4

033 The Moonbase 2 / 4 1, 3

034 The Macra Terror 4 / 4 All

035 The Faceless Ones 4 / 6 2, 4, 5, 6

036 The Evil of the Daleks 6 / 7 1, 3, 4, 5, 6, 7

038 The Abominable Snowmen 5 / 6 1, 3, 4, 5, 6

039 The Ice Warriors 2 / 6 2, 3

041 The Web of Fear 1 / 6 3

042 Fury from the Deep 6 / 6 All

043 The Wheel in Space 4 / 6 1, 2, 4, 5 6, 7

046 The Invasion 2 / 8 1, 4

049 The Space Pirates 5 / 6 1, 3, 4, 5, 6