Bang on Obgraham. This side of the pond too money can come before common sense. However Wiggy, the NHS doesnt pay for more than basic screening on the whole.
I have said before on this forum how important general practitioners are in the health chain. Sadly politicians have run them down in many countries, but their screening is the backbone of good care - measure blood pressure, check the urine, ask about symptoms. Teach about testicular and breast examination. Perhaps some simple blood tests to be analysed with care. Yes the NHS does that.
The other screening I do support is virtual colonography which uses a CT scanner with additional clever software to make a cartoon of the colon and pick up polyps before they become invasive cancer. With newer machines the dose of radiation is falling fast. We may be able to prevent not only death but also the dreadful surgery and chemotherapy needed once the cancer spreads - it is the commonest cause of death after lung and breast cancer. The VC can also check on the aorta, female organs and even the liver and spleen, and we often combine it with a calcium score which measures the amount of calcium deposits in the heart. A low score effectively eliminates serious coronary artery disease. The entire test takes 15 minutes and off you go back to work
Sadly the general public think more tests are good, but false positives and information we can do nothing about are real risks. So I am not sure how much else is helpful. Ultrasound of the carotid arteries is cheap, fast and reliable but only applicable in older people. As for whole body MRI the question is what do you do with the results? 2-3% of the population have asymptomatic cerebral aneurisms. If you find one, the individual will really struggle to accept doing nothing - they wont get health or travel insurance in any case!! - but treatment has a significant risk of death and morbidity. I for one dont want to go there.
Other tests are a few years off - we may be able to identify cancers years before they develop but at the moment there is too much snakeoil out there.