A primary school had a set of SATs results annulled after an investigation uncovered administrative errors.

Former Year 6 pupils at Pinner Wood School, in Harrow, will see their July results removed from the record after the Standards and Testing Agency found evidence of “maladministration”.

The school pointed out that the children affected will not be disadvantaged during their secondary education and they will have the chance to prove themselves again during their GCSEs.

Head teacher Sarah Marriott said she will take any advice on board and assured those associated with the school that it will continue to operate at the highest standard.

She said: “Fortunately, this judgment takes nothing away from our pupils and former pupils who worked so hard.

“We’re proud of the education they received here, and every parent out there knows just how well their child has done this year and how they have thrived at Pinner Wood.

“Staff performed brilliantly through all the disruption and upheaval of the past two years, staying focussed on the children’s welfare and education.

“A validated teachers’ assessment of their work last summer saw them score exceptionally highly.

“In our view we acted correctly within the regulations but if there are lessons to learn from this, we will learn them.”

Pinner Wood was forced to temporarily relocate after a chalk mine was discovered underneath its site. It returned to Latimer Gardens in January.