It's a poignant photo which has stirred many memories.

A group of young students laugh and smile for the camera on the steps of No 10 Downing Street.

And one of them is Jo Cox, the lass from Yorkshire who grew up to be a brilliant politician but was cruelly murdered less than a week ago.

The tragic death of Mrs Cox not only stunned her husband, children and family, but also those who knew her - inclduing former Heckmondwike Grammar School teacher John Lockwood.

Mr Lockwood, now 80, of Almondbury, was at the school for 37 years and became head of geography.

He remembers teaching Jo’s parents Gordon and Jean as well as the teenage Jo herself.

And he has a treasured picture of her with fellow students in Downing Street.

Many had tipped Mrs Cox to be a Cabinet star of the future, meaning many visits to Downing Street.

Jo Cox is pictured left on the steps of 10 Downing Street on a school trip with fellow Heckmondwike Grammar School pupils. Kirklees Council Conservative David Hall is second from right. The picture was taken by retired teacher John Lockwood, who was a teacher at the school at the time.

Mr Lockwood said: “I used to organise trips to London and I remember taking a group of 10 to Westminster. There were nine girls and just one boy in the group. I cannot remember the exact date but it was in the early 1980s.

“We attended a service at Westminster Abbey for a Commonwealth Society event and we then toured Downing Street.

“The photo was taken right outside the famous door and Jo is there with her friends.

John Lockwood of Almondbury was a teacher at Heckmondwike Grammar School when murdered MP Jo Cox was a pupil

“One of the other students is David Hall, who is now a Conservative councillor for Liversedge and Gomersal on Kirklees Council.

“A friend and I met up with Jo only a few months ago and we gave her a copy of the photo.”

Time Line

Jo Cox murder - how events unfolded

  1. How events unfolded during the day

    MP Jo Cox dies following shooting in Birstall - latest tributes

  2. The MP in profile

    Who is Jo Cox? The Batley and Spen MP in profile 

  3. Everything we know about what happened

    Jo Cox murder: everything we know so far 

  4. Eyewitness reports

    What happened to Jo Cox? Eyewitness claims attacker shouted 'Britain First' before shooting her three times 

  5. Britain First leader says killer 'probably wasn't a member' of far right group

    Britain First leader says Jo Cox attacker might have shouted 'is it time to put Britain first?" 

  6. Jo Cox has tragically died of her injuries

    Breaking: Jo Cox MP dies after attack in Birstall today 

  7. Jo Cox obituary

    Jo Cox obituary: Batley and Spen MP so proud to serve her home town 

  8. Jo Cox's husband Brendan's statement

    Jo Cox's husband's heartbreaking statement after MP's murder 

  9. Police statement in full

    Jo Cox murder: West Yorkshire Police's statement in full 

  10. Hero police tacked suspect despite being unarmed and not wearing stab vests

    Watch: Moment Jo Cox murder suspect is arrested by hero police

  11. Tears and sadness at the vigil in Jo's memory

    Jo Cox murder: Emotional vigil held in memory of Batley and Spen MP 

  12. Book of condolence opened in Batley

    Jo Cox murder: Moving tributes pour in for MP as book of condolence opened in Batley

  13. Leaders unite

    In pictures: David Cameron and Jeremy Corbyn unite in Birstall tribute to Jo Cox 

  14. A local campaigner

    This is what Jo Cox did for her constituents... 

  15. More than £1,000,000 raised for Jo

    Overwhelming response to Jo Cox charity fund — here's how you can get involved 

  16. Online condolence book

    Leave your tribute to Jo Cox in online condolence book 

  17. Terrorism link probed

    Anti-terrorism officers probe Jo Cox murder suspect 

  18. Thomas Mair charged with murder

    Thomas Mair charged with murder of Jo Cox MP 

  19. Mair's first court appearance

    Jo Cox murder accused Thomas Mair gives name as "Death to traitors, freedom for Britain" in court 

  20. "He never spoke to anyone"

    Jo Cox murder: Accused Thomas Mair's house boarded up as neighbours describe their shock 

  21. Tributes from Jo's devastated family

    Jo Cox murder: MP's heartbroken family visit Birstall and thank hero who tried to save her 

  22. A hero tried to save her

    How a brave pensioner was stabbed trying to save Jo Cox 

  23. "A good Samaritan"

    Jo Cox was a 21st Century Good Samaritan 

  24. Main parties won't contest Batley and Spen seat

    Batley and Spen by-election: Labour will be allowed to keep the seat 

  25. MPs wore white roses in Jo's honour

    Opposing MPs may break with tradition to honour Jo Cox in the House of Commons 

  26. Hero Bernard Kenny who tried to save Jo

    Revealed: First picture of hero pensioner who made desperate bid to save MP Jo Cox's life 

  27. Tributes to Jo

    Light sculpture created for Jo Cox memorial service in Huddersfield tonight
  28. People pay tribute to Jo on her birthday

    Worldwide tributes planned for Jo Cox on her birthday 

  29. Mair's first appearance in crown court

    Jo Cox murder: Accused Thomas Mair appears at the Old Bailey court 

  30. MPs pay tribute in parliament

    Poignant tributes to murdered MP Jo Cox at Westminster 

  31. More than £1,000,000 in four days in Jo's memory

    Jo Cox memorial fund raises over £1m in just four days 

  32. Calls for Bernard to receive the highest honour

    Hero Bernard Kenny released from hospital four days after Jo Cox attack 

  33. Jo worked hard to support refugees

    Refugee Week: Five ways Jo Cox MP helped refugees