6. You don’t recognise any of the nail brands

If a salon uses well-known, reputable brands, it gives you some reassurance that they’re legit.

“Good, ‘full-system’ brands like CND Shellac, Gelish, and OPI have proper distributors that will only sell to qualified nail professionals,” says Newman. “Of course, anyone can buy products off eBay or Amazon so good products do get into the wrong hands, but it’s at least some indication.”

Just don’t assume that a salon that uses eco-friendly or ‘non-toxic’ products is necessarily ethical in the broader sense of the word. You’d hope that a salon that promotes ethical practices from an environmental point of view would also pride itself on treating its staff ethically, but it isn’t a given.

7. Something just feels ‘off’

If in doubt, trust your gut. “If something is making you uneasy – maybe the demeanour of the manicurists just doesn’t feel right or the atmosphere feels oppressive – call our helpline on 08000 121 700 or get in touch at modernslaveryhelpline.org,” says Currell.

“You can speak to us completely anonymously and we contact the relevant bodies and authorities to ensure the issue is investigated sensitively. No one is going to barge into a salon or shut it down unless there’s proper evidence of illegal activity.

“With nail salons, there’s a whole spectrum of issues from poor working practice through to labour abuse, through to modern slavery, and our staff are specialists in this.”

Nail salons are used for modern slavery. Here’s how to spot an ethical one