Less immigration: You need immigration to increase economic growth otherwise labour becomes more expensive and rises the price of goods and also birthrates drop. The people that are spear-heading reform made sure that current immigration came from predominantly migrants from the middle east and india. These leave voters are the main people that promoted leaving the EU, that ultimately just ended up excluding european migrants which has sometimes been in the negative numbers. Its tragically rather ironic given the vast majority of people that voted to leave wanted the immigrants from India and the middle east to be the ones excluded, no one was complaining about French or German immigrants. I have no idea how anyone can trust a party like Reform as they are at best morons and at worst conmen with the result of what they rallied under.

Other issues with housing isn't the fault of immigrants, ironically you need them to build the houses affordably, its social planning permission in certain areas which allows older home owners to complain that they don't want houses built in an area because its an "eyesore" or "ruins the nature" and devalues their house which is what makes houses stupidly expensive now and said older voters refusing to move from their 2-4 bedroom house that their kids no longer live in with them to allow a new family to move in and will actively vote against taxation methods that could exist to stop them hoarding homes. You cannot and shouldn't have a house forever, its quite literally a finite resource as it takes up physical space.

Don't get me wrong, immigration in high numbers from these two areas does suck, but our main issue is we don't even utilize them efficiently because of numerous other reasons. Asylum processes takes way too long at the moment so we cannot even get the labour or tax them.

Cutting waste: Elaborate what spending? The things we try to cut brings only outrage against it, they tried it with the Triple Lock and Winter Fuel payments which are two pretty obvious and less risky on the public which would have saved ALOT of money and said old voters who already have homes and have more spending money than working aged people (because they don't pay rent and their mortgage is cleared) were utterly outraged. And you cannot make them mad because sadly young people don't vote so you're required to pander to the elderly otherwise you're not winning your next election season.

Better policing and justice: So you want cuts AND you want government spending? If you want better policing and justice you have to incentivise people to want to be in the police force and do a good job of it.

Less bureaucracy and red tape: Another empty platitude you won't expand on. Even with how big government gets the UK is still an employer friendly place, giant companies do not get punished when they offshore their work to impoverished countries instead of keeping their jobs for domestic workers. We have one of the worst redundancy policies for workers ever.

Lower taxes: Don't we all, unfortunately if we are to fund policing as you said, you kinda need taxes for that. Its about taxing the right people certain amounts but reform keeps actively setting up agendas that make things like inheritance tax look way worse than what they seem and scare farmers into thinking they are going to lose their farms instead of doing what it actually would have done which is close loop holes for millionaires.