Faisal Islam: The new PM has big ideas - but what will they cost?

As Andy Burnham settles into his new role as Prime Minister, the UK is bracing itself for a series of costly policy changes. While many of these proposals sound appealing on paper – unfreezing income tax thresholds, investing in mass council house building, and tackling rough sleeping – the reality is far more complicated.

Burnham’s team has floated the idea of lifting the income tax threshold from £12,570 to £13,000, which would cost at least £4 billion depending on inflation rates. This move is being pushed by some significant unions, but it raises questions about the extent of tax rises or extra borrowing required to make budget sums add up. The UK’s current borrowing rules already allow for a level of flexibility, and Burnham’s suggestion that he will be using this “flexibility” to help with new announcements has sent shivers down the spines of financial markets.

The reaction in the markets is not surprising given the UK government’s 10-year borrowing rose above 5% on Monday. This increase may seem small compared to other European economies, but it highlights the sensitivities at play when a new Prime Minister is overhauling his cabinet and implementing major policy changes.

Burnham’s commitment to decentralisation and devolution is also being closely watched. His promise to publish a 10-year plan for the country and economy later this year will be a critical test of his ability to balance competing priorities and make tough decisions. The fact that he wants to fund the Defence Investment Plan, a multi-billion, multi-year spending commitment for the UK military, while also prioritising mass council house building and welfare reform raises questions about how he will square these competing demands.

The new Prime Minister’s conundrum is not unlike that faced by his predecessors. He must navigate the treacherous waters of manifesto commitments and borrowing rule constraints, all while trying to deliver on his promises to reboot Britain. The recent rapid turnover of prime ministers and chancellors shows just how challenging this task will be.

Burnham would do well to remember that policies are only as good as their implementation. His “big ideas” must be tempered by a realistic understanding of the challenges ahead and a willingness to make tough decisions about what can and cannot be achieved. The markets are watching closely, and it’s not just financial institutions that will be impacted – every decision he makes will have far-reaching consequences for ordinary people across the UK.

Burnham’s Manchesterism may have gotten him to No 10, but it remains to be seen whether this approach will work for the UK as a whole. As he embarks on his ambitious reform programme, he must be prepared to confront the cold hard truth: that policies are not just about grand ideas, but also about the difficult choices and trade-offs required to make them work.

The clock is ticking, and Burnham’s ability to deliver on his promises will be put to the test in the coming months. The UK will be watching with bated breath as he navigates the treacherous waters of high national office.