Skin cancer is the most common cancer in the UK, but treatable if detected early. Self check-ups play their part. Here’s what to keep an eye on – and how.
Check for changes in your skin
Look for anything new, changing, or unusual:
A new growth that’s pearly, transparent, brown, black, or multi-coloured
A mole, birthmark or brown spot which has changed in size, shape or colour. See ‘New or changing moles’ below for more details
A spot that continues to itch, hurt, scab or bleed
An open sore that doesn’t heal within three weeks
New or changing moles
With moles, follow the ‘ABCDE’ rules:
Asymmetry – the two halves of a mole may differ in shape
Border – the edges may be irregular or blurred, and sometimes show notches
Colour – it may be uneven. Different shades of brown, black or pink may be visible
Diameter – most skin cancer melanomas are at least 6mm in diameter. Report any changes to your doctor
Expert – if in doubt, get it checked. Your GP can help or book directly with our dermatology doctors who have 20 years’ experience in diagnosing skin cancer. Book online, call us on 020 3941 1815, or contact us here.
How to do a self-exam
Grab a hand-held mirror, stand in front of a full-length mirror, and check the following:
Face. Nose, lips, mouth, and the front and back of the ears
Scalp. Part hair into sections and use the hand-held mirror to reflect into the full-length mirror
Hands. Palms and backs, between fingers and under fingernails. Continue up the wrists, and examine the front and back of forearms
Arms. Standing in front of the full-length mirror, begin at the elbows and scan all sides of the upper arms, including underneath
Chest. Focus on the neck, chest and torso. Lift breasts to check underneath
Upper back. With your back to the full-length mirror, use the hand-held mirror to inspect the back of the neck, shoulders, upper back, and the back of your upper arms not visible in step 4
Lower back. Still using both mirrors, scan the lower back, bum and backs of both legs
Legs. Sit down, then prop each leg in turn on a stool or chair. Use the hand-held mirror to examine the genitals. Check the front and sides of both legs, thigh to shin. The finish with ankles and feet, including the soles, toes and nails (without nail polish)
Dermatologists recommend you do this once a month. If you’ve never checked your skin before, so are unsure of what’s new or changed, book an examination with a dermatologist – ours have over 20 years of experience. In any case, the Skin Cancer Foundation advises doing a skin check annually.
If you have concerns over a changing or new mole, book with your GP (if you prefer the NHS route) or with us right away so it can be checked quickly.
Trustindex verifies that the original source of the review is Google.
Couldn't recommend No23 enough ! They have amazing facials (Shannon really takes her time to understand your skin and gives it what it needs) and their medical doctor is similarly amazing. The only place I go ! Heloise
M Mat
05/03/2025
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Great clinic in a beautiful part of London. Shannon was very friendly and informative. I have a feeling I will love the BBL laser results. I can't wait for my second treatment.
Daniel Chambers
12/02/2025
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Out of numerous clinics I contacted, No.23 Skin was the only one that offered me the reassurance I needed for having a skin tag removed from my face. It was immediately obvious from my initial phone conversation that this was a place to trust. Every aspect of the clinic from their website, to the staff and in-house experience was exceptionally professional - there's a beautiful feeling of sanctuary when you arrive. The procedure itself was faultless and flawless - I am utterly delighted and grateful for the perfect result. With no doubt I recommend them eminently.’
Stephanie Ellaby
10/02/2025
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No 23 has been amazing for my acne treatment, the doctor was so understanding and made me feel really at ease. I’ve also had a few fabulous facials and always come out feeling really relaxed and glowing.
Andrew Ellaby
10/02/2025
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Great service. Helen is amazing! Highly recommend.
George Tomlinson
22/01/2025
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Amazingly positive experience with Dr Cherry Armstrong and No. 23 skin. It’s a friendly, welcoming practice, which makes the experience of visiting enjoyable rather than daunting. More importantly, though, Dr Armstrong treated my facial skin complaint quickly and accurately. She put me on a treatment plan which was entirely effective and has improved my skin significantly. My thanks to No. 23 and Dr Armstrong, and I wholly recommend them to anyone looking for a good dermatologist.
Jon Keating
31/12/2024
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All round excellent experience. Very grateful for Dr Armstrong's expert knowledge, aftercare, and the quick and effective way in which she conducted the procedure. High praise to the overall team including the warm and friendly reception staff. Would definitely visit again if needed and thoroughly recommend using No 23 Skin.
Harry Fisher
17/12/2024
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I knew I was in the right place when I spoke to Helen on the phone to enquire. Immediately felt in safe hands, understood and comfortable. Dr Cherry took her time even at the end of her long day, and she listened to all my questions and worries about my skin. I phoned a few clinics and I’m so happy I went with No23, really got taken care of.
Harry
Megan Ferris
07/12/2024
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Honestly the BEST clinic! Shannon has been so amazing and I feel so comfortable with her and the chats are great! She also wants to see the best results with you! I’ve been for 3 BBL sessions and have seen amazing results and lighter freckles 🤩 It’s so worth it and got plenty of compliments on my skin!
Referrers Club
We are a growing clinic and are very grateful for your help spreading the word.
If you tell someone else about us and they book a doctor consultation or treatment, we will give you both £50 off your next treatment.
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