Two high-profile Norwich academies have seen their poor GCSE results confirmed in official government league tables.

The Department for Education said last summer's results at City Academy Norwich and Ormiston Victory Academy were 'not good enough', and said it was working with them to ensure rapid improvement.

City Academy saw 27pc of pupils achieve the government's target of five GCSEs at A*-C, including English and maths – below the minimum floor standard of 40pc, and the third year this figure has been below 30pc.

The school received an official warning about 'unacceptably low' standards from regional schools commissioner Tim Coulson in September, starting a process which could see it removed from its current sponsor, the TEN Group.

A spokesman for the group said: 'We are continuing to liaise closely with Mr Coulson and his team on the progress we are making and we are confident City Academy Norwich will achieve significant improvements in results this year.'

Results also fell at Ormiston Victory Academy in Costessey, which had crashed from 73pc to 41pc in 2014, and went down to 37pc last summer.

A spokesman for Ormiston Academies Trust said there was a disparity in its English literature international GCSE results, which was still being investigated.

He also pointed a doubling of the proportion of pupils achieving the English Baccalaureate, which concentrates on traditionally academic subjects favoured by the government, and said the move to the Progress 8 measure, which will be used in GCSE leagues from this summer, would 'reward schools like us which do well on value added in key academic subjects'.

Do you have an education story? Email martin.george@archant.co.uk