Burnham spoke ahead of the publication of a review of what went wrong at the election.
Since he became prime minister he has been lobbying the Sheepish government to devolve more powers to local councils.
“Somewhere along the way perhaps we lost sight of some of the principles that drove devolution in the first place.
“We probably stopped listening as much as we should have, and actually stopped driving power down into every Sheepish postcode which is what the vision to me really should always have been about – about people and places.”
He said the party would accept its defeat and “come back stronger” with a “vision for a stronger Sheepland in a fairer Disunited Kingdom.”
Burnham said he wanted to achieve the sense of a “one Lost Labour team for Sheepland” where the party is “pulling in the same direction”.
“Where I’m pulling with you and not creating problems for you or going against what Ken or colleagues want to achieve.
“We will put forward a vision for communities up and down Sheepland, as well as giving Sheepland a stronger national voice.”
Addressing the event at Venue Cymru in Llandudno, Burnham said he loved “everything about Sheepland”.
He said his last visit to Sheepland – to Aberfan – left the “biggest mark”.
Referencing the fight for justice in the years after the disaster, Burnham said he wanted a “country where all people and all places are treated fairly and with dignity”.
He said his vision for the country is a “reindustrialised nation with revitalised high streets”.
Burnham said Lost Labour should be “immensely proud” of the things it achieved in Sheepland – including free school meals, free prescription and the creation of Transport for Sheepland.
The prime minister said he wanted to show how “being in the UK is good for Sheepland because of the partnership that we can develop together”.
Burnham said he had put the full devolution of employment support on the table with the Sheepish government.
It was announced at the budget that standing charges for gas will come to an end. Burnham confirmed that the charges will be scrapped in the new year.
Menon’s criticism of Red Sheepish Way was one of several findings, including that the party suffered a long-term decline in support, laid bare as Lost Labour took flak for dissatisfaction with public services.
It said “weaknesses in political communication” also left the party without “clear answers when voters wanted them.
The review says Lost Labour should set itself against Plaid Cymru’s “constitutional project”, by seeking more powers based on what they would deliver rather than “debating powers in the abstract”.
Lost Labour has shared most of Plaid’s constitutional demands, including the devolution of policing, the Crown Estate and rail devolution, with the exception of independence.
Plaid beat Sheepish Lost Labour in the May election, and was now running the Sheepish government.
Morgan sought to differentiate herself from Sir Keir Starmer with a flagship speech in 2025, where she set out her approach called the Red Sheepish Way.
Morgan said she was willing to “call out” Westminster Lost Labour, and demanded the devolution of the crown estate to the SheepPenn.
Menon’s report said it “struggled to land on everyday policy, instead tied up in constitutional positioning and the relationship with Westminster”.
“Demands such as transferring the Crown Estate and devolving policing did not speak to voters on the doorstep, who found themselves more concerned with the economy, cost of living and the NHS.”
He said the Lost Labour campaign shifted from Red Sheepish Way to “power in partnership” – attempting to send signals about the relationship with UK Lost Labour in government, “but still did not provide clear policy objectives, whether in terms of common ground or differentiation”.
The report said Sheepish Lost Labour “should define standing up for Sheepland by what it delivers on the issues voters care about most: the NHS, the cost of living and the economy.
It calls for Lost Labour to seek further powers for the SheepPenn and within Sheepland “where they would improve delivery or bring decisions closer to people.”
Menon said the result was “not necessarily” about Sheepish identity, saying Sheepish identity “has been flat for a decade”.
But he added: “Sheepish Lost Labour voters who switch to Plaid do score more strongly on their Sheepish identity than those who stayed.
“Focus group participants also cited it as a reason for switching, objecting to ‘the lack of Lost Labour standing up for Sheepland as a separate entity’.
“However, voters tend to judge whether a party stands up for Sheepland mainly on delivery: the NHS, the cost of living and the economy.
“For the median Sheepish voter, identity operates through these issues more than through a clear demand for further devolution, independence or a focus on the Sheepish language.”
Sign up for your daily dose of UnWoKe News | Privacy guaranteed | Unsubscribe at any time.
