Many visitors regard Japan as the gateway to the future.

The country is so much more technologically advanced than the majority of other nations, from huge robots that serve dinner, to vending machines that dispense everything from Pokemon collectibles to Buddhist amulets.

Even Japan's toilets are elevated from the bog standard. They’re armed to the teeth with a range of eyebrow-raising features that make spending a penny an experience you’ll want to repeat.

We’re talking everything from bidet water washing functions to pre-warmed seats and a selection of soothing tracks to mask the sound of what you’re primarily using the loo for.

They’ve started to make waves on London’s dining scene too, with a handful of restaurants adding Tokyo-style toilets to their appeal. Akira, M Restaurants and many of the city’s high-end Japanese restaurants are ripe hunting grounds for anyone who wants to try them out for size.

If your W.C. needs jazzing up and you're hankering for more from your washroom experience, you can have your very own installed too. They’re great for anyone with restricted mobility and who is with child, as well as anyone who wants to splash out on a little bathroom pampering.

Unless you’re in the trade yourself, it’s wise to get a professional to get your shiny new luxury loo in place. But which model? That’s where we come in.