Interest and debt repayments are academic, debt isn't necessary bad, it only becomes bad when you can't afford to pay it.
The UK has quite a lot of money that is simply wasted. We give away 8 billion a year on Foreign Aid, most of which can't be accounted for. We just write a cheque because it's mandated in law to do it.
We have a military which is living of old stories of derring-do and tally-ho, pip-pip, may I introduce Lord Flash Heart the saviour of the Western Front. In reality we can only afford a small coastal defence force. We are NOT the US, we simply can't afford the armed forces we have, and our Government should admit this publicly.
The NHS is a great idea, but again, is so badly mismanaged that it's tearing itself apart. It needs to be stripped back to basic emergency care, it's not possible to provide free medical care for everyone, we need to accept this.
We also need to grow up and stop getting twitchy everytime the Police do something. Our Police have no powers, no equipment, no staff and no training. But everytime they arrest some 14 year old with a knife the only thing people are interested in is what colour the kid was!
This insistence on ineffective Policing is costing us Billions, it's why our court system is falling apart, our prisons are full and Probation Services are reduced to box ticking.
We have wasted 150 billion on a big train set which serves nobody and at best, when there are no strikes, no leaves on the line, no engineering works, no flooding, will cut 15 minutes of a train journey. All while we are being told to WFH and not use any transport in order to save the planet. WTF!
We don't have a budget issue, we have a waste issue. Actually, even worse, we have a voting public who are delusional about the real issues.
A change of Government will so nothing without a change of attitude.
We are not a rich country.
We can't afford a huge military.
We need to wake the fuck up and grow the fuck up.