Conservative leader and former business secretary Kemi Badenoch has told the Horizon IT inquiry the government allowed “bureaucracy to get in the way of redress” for wronged subpostmasters.

Mrs Badenoch said she, alongside ex-postal affairs minister Kevin Hollinrake, “wanted to get the money out there” but were “always given a reason why we couldn’t” by government officials.

In her witness statement to the inquiry, she said the Post Office would have “disappeared in its current form long ago” if it was a private organisation, adding that it is a “20th century organisation that is struggling to evolve in a 21st century world”.

The statement went on: “But we are keeping it alive — the result is that it is in a permanent state of stress and that will always impact culture.”

After Mrs Badenoch gave evidence, the European boss of Horizon manufacturer Fujitsu, Paul Patterson, told the inquiry “I absolutely don’t trust the Post Office” with regard to investigating shortfalls in subpostmasters’ accounts.

Mr Patterson said: “I would like to be satisfied that they are using more than just one data source, and I’ve not seen anything which tells me that they’re using more than one data source.”

Sam Stein KC, who represents a number of subpostmasters, then asked the Fujitsu boss: “So in that sense, we put this all together – frankly, you don’t trust the Post Office in order to get this right?”

Mr Patterson replied: “Well on this particular topic, I absolutely don’t trust the Post Office.”

Commenting on why the redress process was slow earlier on Monday, Mrs Badenoch said in her statement: “We had briefings on the issue with officials, and it was quite clear to me that we were allowing bureaucracy to get in the way of redress too much of the time.

“Kevin (Hollinrake) and I wanted to get the money out there, and we were always given a reason why we couldn’t.”

Explaining why she felt bureaucracy was getting in the way of redress, Mrs Badenoch told the probe on Monday: “I feel that there is often too much bureaucracy in the way of getting things done, because people are worried about process.

“They are worried about: if things go wrong, they’ll be on the hook for that.

“So they carry out lots of checks and balances well beyond what I think is required in order to deliver the right outcome.”

Questioned by counsel to the inquiry Jason Beer KC on who allowed bureaucracy to get in the way of redress, Mrs Badenoch replied: “Well, the government machine.

“I think I remember asking a question like: ‘Why can’t we just give them the money?'”

Mrs Badenoch continued: “Then I’d be told ‘there could be a judicial review, and the Treasury has these value for money requirements, if you don’t meet them then you might end up having to go to court’ – so I just kept trying to find a way through.”

Before her evidence, Business Secretary Jonathan Reynolds said the Post Office’s corporate culture is at the root of the Horizon scandal, but insisted the organisation is still “an incredibly important institution in national life”.

Mr Reynolds told the inquiry he takes “ultimate responsibility” at governmental level for full, fair and prompt redress for subpostmasters.

He said there had been a “significant increase in the pace at which compensation has been paid” since the general election, and told the probe he did not believe it had been “at the cost of fair or accurate compensation being made”.

Also giving evidence on Monday, Mr Reynolds said subpostmasters do not make “sufficient remuneration from what the public want from the Post Office”, adding that increases to their pay will require “very significant changes to the overall business model”.

Commenting on the culture within the Post Office in his witness statement to the inquiry, he said: “It is clear that the Post Office’s corporate culture is at the root of this scandal, and I want to make sure the system works for subpostmasters.

“I am supportive of a reform agenda which seeks to turn this ambition into reality.”

Lead campaigner and former subpostmaster Sir Alan Bates previously told MPs he wanted the Department for Business and Trade (DBT) to set a deadline of March next year for redress payments for claimants who took the Post Office to the High Court between 2017 and 2019 – also known as the GLO scheme.

Asked if he could commit to the deadline set by Sir Alan, Mr Reynolds said: “The position I’m in is I’m trying to make sure people get redress for a horrendous scandal… at a minimum, I don’t want to do anything that makes that injustice even worse.

“And the worry about a deadline – can you imagine a situation where, for whatever reason, a claim has not come in?

“I think it will be unconscionable to say that that is not going to be considered.”

Mr Reynolds added: “If my frustration at those claims not arriving in the department meant that I felt that was the only way to speed those up, and I felt that wasn’t going to prejudice any individual claim… it will be something that I will consider.”

Counsel to the inquiry Julian Blake asked: “If there is not full, fair and prompt redress for subpostmasters, do you take ultimate responsibility at a governmental level?”

The Business Secretary said: “Yes, I think this is an example of where in the past, there has been insufficient accountability, and ultimately as the Secretary of State, I take accountability for everything that is within the Department for Business and Trade.”

Mr Blake continued: “How do you propose that full, fair and prompt redress is going to be achieved?”

Mr Reynolds responded: “Since the general election, there has been a significant increase in the pace at which compensation has been paid.

“The overall quantum of compensation is up in the last four months by roughly a third, and the number of claims to which there has been an initial offer being made in response to that claim has roughly doubled in the last four months to what it has been in the four months preceding the general election.

“But I would very much want to say that I do not believe that increase in pace has been at the cost of fair or accurate compensation being made.”

Mr Reynolds added: “The position is still not to everyone’s satisfaction, but I think you can see we’ve tried to speed up compensation and redress, without that being at the cost of any claimant feeling that’s not an accurate or fair level of redress for them to receive.”

Commenting on the how the Post Office should change in the future, Mr Reynolds said: “I think despite the scale of this scandal, the Post Office is still an incredibly important institution in national life.

“I think it still has an incredible role to play in communities.

“I look at the business model of the Post Office, and I think even accounting for the changes in the core services that are provided… there’s still a whole range of services that are really important.

“But I don’t think postmasters make sufficient remuneration from what the public want from the Post Office, and I think that’s going to require some very significant changes to the overall business model of the Post Office.”

More than 900 subpostmasters were prosecuted between 1999 and 2015 after faulty Horizon accounting software made it look as though money was missing from their accounts.

Hundreds are still awaiting compensation despite the previous government announcing that those who have had convictions quashed are eligible for £600,000 payouts.