Two Fujitsu software specialists will give evidence to the Post Office inquiry after executives told MPs the firm has a “moral obligation” to compensate victims of the Horizon IT scandal.

John Simpkins, a team leader within Fujitsu Software Support Centre, and Gerald Barnes are likely to be asked about what they knew about glitches in the system after the company’s European director, Paul Patterson, said staff were aware of errors.

Their appearance comes after Mr Patterson apologised for Fujitsu’s role in the “appalling miscarriage of justice” which saw hundreds of sub-postmasters wrongfully prosecuted over supposed accounting errors.

Fujitsu’s global chief executive, Takahito Tokita, also apologised in his first public remarks about the scandal, Spekaing to the BBC from the World Economic Forum in Davos, Mr Tokita said: “This is a big issue, which Fujitsu takes very seriously.”

On Tuesday, Rajbinder Sangha, a Fujitsu employee, said data from the scandal-hit Horizon system is still used in court proceedings.

The inquiry was told on Tuesday that Mr Barnes raised concerns around “duplicate transaction” issues which had potential to impact  “a number of high-profile court cases in the pipeline”.

Follow the latest updates below and join the conversation in the comments section