If you were to own a £3.3 million pound jet/superyacht/Caribbean beach chalet... then you would probably rent them out when you don't want to use them in order to cover costs...
If you do this as a private individual then you would pay tax on any income... However, if you set up a company by which you manage your assets/investments/toys then everything becomes an operating cost and therefore deductible except for the two weeks of the year you actually use them.
If you or your accountant is switched on, then you pay your company for the time you use the item, effectively paying yourself for the privilege of use.
In the jet example, A N Other racing driver probably pays a charter cost to his company for the use of the jet which is probably operated by a company that he is the only shareholder. He, being self employed, is probably also legitimately able to write off the charter costs as business expenses in order to get to and from work... effectively making the jet 'free'.
Given a certain level of cash flow, the super rich lifestyle actually costs alot less than you might think...
Mere mortals can just as freely apply this way of thinking to our lives, but the scale of the savings may not make it viable.
If you can get your employer to change your contract to one of a self employed consultant, renewable on say a five-year basis, for the same gross salary, then all your work related expenses such as clothes, travel, meals at work, office space in your house (with a proportion of your mortgage/rent, utilities etc) all get off set against your income tax... Hell, whilst your at it, set the house up as a B and B... (nothing to say you actually have to have paying guests...) and claim the entire cost of the property against your business.
OK you have to file a tax return every year, and it might not save enough to be worth the hassle, but the principle is the same as if you have millions in the (offshore) bank.
By way of example, if I were to do this, then my annual tax liability might drop to around £600 if I had a second car for private use. A saving of around £1,800...
Food for thought...