A reusable Condom is science fiction. They currently don’t exist and are not for sale in the UK or on the global market. Many companies have tried (and failed) to produce a reusable condom that’s safe and continues to be safe once reused.
It’s only a matter of time before a breakthrough is reached and a reusable condom is developed, but until then, it’s standard, use once condoms only.
Never attempt to reuse a condom, it won’t fit properly, and the strength of latex would have likely weakened, making them more prone to splitting.
The closest thing to a reusable condom is a Penis Sheath which are, however, NOT contraceptives and NOT suitable for protection against pregnancy and STD’s.