What would immediately have an impact is meaningful fines as well as custodial sentences. We routinely hear that the police do not have resources. The prison service does not have resources .....
With drunk drivers - impose a meaningful fine, say 1 year's salary and confiscate the vehicle. A copper in a car, going round village pubs where I live would get at least two from my village alone in a night. His 30k salary would get paid in a weekend.
With mad cyclists - confiscate the bike, impose a meaningful fine (thousands). If coppers earn thirty grand a year. 2 coppers at 60k a year, £1,000 per cyclist convicted. One with a camera at a junction, the other down the road to pull the cyclist over. They would get 60 cyclists in a DAY in London
For drugs - confiscate all vehicles and premises associated with the trade
Using a handheld phone while driving a vehicle ? Two coppers again, one with the camera. They would pay their annual salaries in a day if the cars were confiscated and the drivers fines
Bring back corporal punishment, like in Singapore. This is cheap to administer. The shoplifter is unlikely to offend 50 times and get repeated cautions if he was caned after each offence
The police service would become self funding for all manner of crimes
Biometric passports. Biometric checks of every person entering the UK via planes, ferries etc
It is just ignorant and narrow-minded to think that our society lacks the resources to target, punish and deter criminals. We all see crimes being committed on a daily basis. What we lack is leaders with vision