14-05-2020 Coronavirus pandemic, Childs chalk drawing of a rainbow in appreciation for the NHS , Wandsworth, London © Duncan Phillips

02-05-2020 Covid-19 pandemic. Pre-lockdown flyposted adverts for now cancelled music gigs and festivals. Closed shops and businesses in Chalk Farm, London, during the coronavirus lockdown. © Philip Wolmuth

02-05-2020 Chalk Farm underground station, one of many tube stops closed due to Covid-19 pandemic. © Philip Wolmuth

02-05-2020 Covid-19 pandemic. Flyposted We Love Our NHS poem. Closed shops and businesses in Chalk Farm, London, during the coronavirus lockdown. © Philip Wolmuth

02-04-2020 Coronavirus pandemic, Pavement chalk drawing, Be Calm, Putney, London © Duncan Phillips

15-08-2019 Victorian era hotels beneath the White Cliffs of Dover, Kent © Philip Wolmuth

15-08-2019 Hiker on the south-eastern coastal path as it crosses the White Cliffs of Dover, Kent. © Philip Wolmuth

28-07-2018 Cliff edge, Beachy Head, a Chalk headland and suicide spot, East Sussex. There are an estimated 20 deaths by suicide a year at Beachy Head © Jess Hurd

28-07-2018 Beachy Head Lighthouse, Beachy Head is a Chalk headland and suicide spot in East Sussex © Jess Hurd

28-07-2018 Tourists at Beachy Head, a Chalk headland and suicide spot in East Sussex © Jess Hurd

28-07-2018 Tourists at Beachy Head, a Chalk headland and suicide spot in East Sussex © Jess Hurd

28-07-2018 Tourists at Beachy Head, a Chalk headland and suicide spot in East Sussex © Jess Hurd

28-07-2018 Tourists at Beachy Head, a Chalk headland and suicide spot in East Sussex. Beachy Head Lighthouse © Jess Hurd

28-07-2018 Cliff edge, Beachy Head, a Chalk headland and suicide spot, East Sussex. There are an estimated 20 deaths by suicide a year at Beachy Head © Jess Hurd

28-07-2018 Cliff edge, Beachy Head, a Chalk headland and suicide spot, East Sussex. There are an estimated 20 deaths by suicide a year at Beachy Head © Jess Hurd

28-07-2018 Tourists taking selfies, Beachy Head, a Chalk headland and suicide spot in East Sussex © Jess Hurd

28-07-2018 Cliff edge, Beachy Head, a Chalk headland and suicide spot, East Sussex. There are an estimated 20 deaths by suicide a year at Beachy Head © Jess Hurd

28-07-2018 Cliff edge, Beachy Head, a Chalk headland and suicide spot, East Sussex. There are an estimated 20 deaths by suicide a year at Beachy Head © Jess Hurd

12-12-2015 Imagine, Red Lines climate change protests COP21 Climate Summit. Paris. © Jess Hurd

25-10-2015 South West Coast Footpath, the 554 ft cliffs of White Nothe, Dorset © David Mansell

25-10-2015 Young woman walking the South West Coast Path towards Durdle Door, Dorset © David Mansell

13-10-2015 Cannabis medicinal remedies written in chalk by campaigners on the pavement outside Parliament. Westminster. London. © Jess Hurd

04-02-2015 No TTIP campaigners lobby outside the European Commission, Brussels, Belgium. © Jess Hurd

19-09-2014 Wrong Way! Yes Campaign Chalk graffiti in George Square the day after polling day in the Scottish Independence Referendum. Glasgow, Scotland. © Jess Hurd

19-09-2014 Too many sheep in Scotland. Yes Campaign Chalk graffiti in George Square the day after polling day in the Scottish Independence Referendum. Glasgow, Scotland. © Jess Hurd

19-09-2014 Obey Your Queen. No Campaign Chalk graffiti No Campaign, far right nationalists, taunt Yes Campaign in George Square the day after polling day in the Scottish Independence Referendum. Glasgow, Scotlan... © Jess Hurd

19-09-2014 We will never surrender. Yes Campaign Chalk graffiti in George Square the day after polling day in the Scottish Independence Referendum. Glasgow, Scotland. © Jess Hurd

19-09-2014 Obey Your Queen. No Campaign Chalk graffiti in George Square the day after polling day in the Scottish Independence Referendum. Glasgow, Scotland. © Jess Hurd

14-10-2012 Waiting for a train, Chalk Farm, London. © Connor Matheson

02-06-2012 Peace of cake, Community not monarchy chalk drawn graphic on the pavement. UK Uncut anti austerity, anti monarchy street party, Diamond Jubilee weekend, Brighton. © Jess Hurd

13-04-2012 Coastal erosion of the white cliffs of Dover. The cliffs usually recede at a rate of 1cm per year © Paul Box

01-04-2009 This is Democracy, chalk graffiti, at G20 Meltdown protest, City of London on the eve of the London G20 Summit © Paul Herrmann

07-02-2009 Snow on fields on the chalk downs near Salisbury after a week of the heaviest snowfalls for over a decade. © Paul Carter

07-02-2009 Sheep in snow on the chalk downs near Salisbury, Wiltshire after a week of the heaviest snowfalls for over a decade. © Paul Carter

07-02-2009 Snow in the fields on the chalk downs near Salisbury after a week of the heavy snowfall © Paul Carter

07-02-2009 Snow fields on the chalk downs near Salisbury after a week of the heaviest snowfalls for over a decade. © Paul Carter

18-09-2008 Boarded up antique shop, Chalk Farm, London © Philip Wolmuth

25-01-2008 A cross for one of the victims of suicide and the lighthouse at Beachy Head, Sussex, UK 2008 © Howard Davies

25-01-2008 The lighthouse at Beachy Head, Sussex, UK 2008 © Howard Davies

25-01-2008 The lighthouse at Beachy Head, Sussex, UK 2008 © Howard Davies

25-01-2008 The lighthouse at Beachy Head, Sussex, UK 2008 © Howard Davies

25-01-2008 The lighthouse at Beachy Head, Sussex, UK 2008 © Howard Davies

25-01-2008 The lighthouse at Beachy Head, Sussex, UK 2008 © Howard Davies

05-08-2007 Chalk cliffs on the south coast of England. UK 2007 © Howard Davies

05-08-2007 The Seven Sisters chalk cliffs on the south coast of England. UK 2007 © Howard Davies

08-04-2007 Surviving cottages in a terrace partly lost to coastal erosion of the chalk cliffs in the village of Birling Gap, East Sussex. © Philip Wolmuth

08-04-2007 Surviving cottages in a terrace partly lost to coastal erosion of the chalk cliffs in the village of Birling Gap, East Sussex. © Philip Wolmuth

08-04-2007 Lighthouse at Beachy Head and walkers on the South Downs Way, East Sussex. © Philip Wolmuth

25-11-2006 Electronic voting during a public consultation on Camden Together, Camden Council's community strategy for 2007-2012, Haverstock School, Chalk Farm. © Philip Wolmuth

25-11-2006 Chief Superintendent Mark Heath, Metropolitan Police Borough Commander for Camden, speaks with Haverstock School pupils during a public consultation on Camden Together, Camden Council's community stra... © Philip Wolmuth

19-07-2006 A P&O Dover to Calais ferry passes the white cliffs of Dover. © Philip Wolmuth

12-07-2006 A P&O Dover to Calais ferry passes the white cliffs of Dover. © Philip Wolmuth

30-10-2005 Two Palestinian boys draw Israeli and Palestinian flags with chalk near their homes which are next to the Israeli security wall in the Abu Dis area of East Jerusalem. The West Bank, 2005 © Steven Langdon

23-06-2005 Chalk downlands, Part of the Ridgeway long distance footpath, Chiltern hills © Duncan Phillips

15-05-2005 The Jurassic Coast of Dorset, now a World Heritage Site, the cliffs and coast line looking from Durdle Door, westerly towards the chalk cliffs of White Face and Bats Head. © David Mansell

28-01-2004 Beachy Head in East Sussex, favoured spot for suicides. Old people enjoying the view. © David Mansell

09-01-2004 Looking along headland near Kimmeridge, Dorset. © Paul Carter

10-06-2003 Ancient stone circle Stonehenge on the chalk down of Salisbury Plain, Wiltshire. © Paul Carter

10-06-2003 Ancient stone circle Stonehenge on the chalk down of Salisbury Plain, Wiltshire. © Paul Carter

10-06-2003 Ancient stone circle Stonehenge on the chalk down of Salisbury Plain, Wiltshire. © Paul Carter

10-06-2003 Ancient stone circle Stonehenge on the chalk down of Salisbury Plain, Wiltshire. © Paul Carter

10-06-2003 Ancient stone circle Stonehenge on the chalk down of Salisbury Plain, Wiltshire. © Paul Carter

10-06-2003 Ancient stone circle Stonehenge on the chalk down of Salisbury Plain, Wiltshire. © Paul Carter

10-06-2003 Ancient stone circle Stonehenge on the chalk down of Salisbury Plain, Wiltshire. © Paul Carter

10-06-2003 Ancient stone circle Stonehenge on the chalk down of Salisbury Plain, Wiltshire. © Paul Carter

10-06-2003 Ancient stone circle Stonehenge on the chalk down of Salisbury Plain, Wiltshire. © Paul Carter

10-06-2003 Ancient stone circle Stonehenge on the chalk down of Salisbury Plain, Wiltshire. © Paul Carter

14-07-2000 Teacher writing on the blackboard - Community - in a lesson at Bruton Primary School Somerset © Paul Box

14-07-2000 Pupils pencil case with the word - Friends -in a lesson at Bruton Primary School Somerset © Paul Box

16-12-1999 A china clay mine, Saint Dennis, Cornwall. © Paul Carter

03-07-1998 A school teacher with his chalk for a month. Vietnam. 1998 © Jim Holmes

20-12-1997 A child writing on a blackboard under the supervision of their teacher, at Juan Antonio de Mella Primary School. © Janina Struk

07-10-1996 Details of cliffs on the west side of The Isle of Wight, at Tennyson Down. © Paul Carter

04-10-1996 Aerial view cf The Needles, on the west coast of The Isle of Wight. Warm afternoon sun is turning the chalk cliffs yellow. © Paul Carter

20-06-1996 Teacher teaching English spelling lesson at a Combined Junior and Infant school in the Midlands © John Harris

24-02-1995 Sheep on a hillside covered with snow. © Paul Carter

06-08-1993 Car driving through roadworks during the construction of the M3 motorway by-pass. © Paul Carter

06-08-1993 Cars passing roadworks during the construction of the M3 Winchester by-pass. Being watched by a security guard. © Paul Carter

13-04-1983 Thelma Holt 1983, artistic director of the Round House, Chalk Farm, London © Peter Arkell

13-04-1983 Thelma Holt 1983, artistic director of the Round House, Chalk Farm, London © Peter Arkell

18-11-1969 Antigone by the Freehold Theatre company, Round House Chalk Farm London 1969 directed by Nancy MecklerAntigone by the Freehold Theatre company, Round House Chalk Farm London 1969 directed by Nancy Mec... © Bente Fasmer

18-11-1969 Antigone by the Freehold Theatre company, Round House Chalk Farm London 1969 directed by Nancy Meckler. Dinah Stabb with Rowan Wylie (behind) © Bente Fasmer

18-11-1969 Antigone by the Freehold Theatre company, Round House Chalk Farm London 1969 directed by Nancy Meckler. Dinah Stabb with Rowan Wylie (behind) © Bente Fasmer

18-11-1969 Antigone by the Freehold Theatre company, Round House Chalk Farm London 1969 directed by Nancy Meckler. Dinah Stabb with Rowan Wylie (behind) © Bente Fasmer

18-11-1969 Antigone by the Freehold Theatre company, Round House Chalk Farm London 1969 directed by Nancy Meckler. Dinah Stabb © Bente Fasmer

10-06-1962 The Caucasian Chalk Circle by Bertolt Brecht staged at the Aldwych Theatre in London, 1962, starring Patsy Byrne, centre left, & Hugh Griffith, seated. © Alex Low

10-06-1962 The Caucasian Chalk Circle by Berolt Brecht staged at the Aldwych Theatre in London in the summer of 1962 and starring Patsy Byrne, centre left, & Hugh Griffith, seated. © Alex Low

10-06-1962 The Caucasian Chalk Circle by Berolt Brecht staged at the Aldwych Theatre in London, 1962, starring Patsy Byrne. © Alex Low

10-06-1962 The Caucasian Chalk Circle by Bertolt Brecht staged at the Aldwych Theatre in London, 1962, starring Hugh Griffith. © Alex Low

19-09-1956 The Caucasian Chalk Circle by Bertolt Brecht, Berliner Ensemble, London 1956 © Felix H. Man

19-09-1956 The Caucasian Chalk Circle by Bertolt Brecht, Berliner Ensemble, London 1956 © Felix H. Man

19-09-1956 The Caucasian Chalk Circle by Bertolt Brecht, Berliner Ensemble, London 1956 © Felix H. Man

19-09-1956 The Caucasian Chalk Circle by Bertolt Brecht, Berliner Ensemble, London 1956 © Felix H. Man

19-09-1956 The Caucasian Chalk Circle by Bertolt Brecht, Berliner Ensemble, London 1956 © Felix H. Man