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You have selected the
justSlim 1 month package

This will give you access to your JustSlim plan for 1 month for £29.95 which includes your joining fee of £15.

After month one you will pay only £14.95 a month and you can cancel your membership at any time.

I want the 1 Month Package

Before you sign up... why not take advantage of this special offer?

With our justSlim 3 month package you can join for FREE and pay only £14.95 a month

Save 50%*

Yes please! Sign me up to the
3 Month Package


Have a Coupon?

* Monthly saving from 1 Month Plan

Questions about Subscribing?
Email us 24 hours a day 7 days a week.

Do you have a PT Code?
justSlim PT is for those referred by a personal trainer.

Payment Methods

Weight Loss Guaranteed

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Feels amazing, I don't get tired during the day anymore, I don't wake up feeling tired anymore, I don't feel bloated and fat, I sleep so much better, I have loads more energy and I am down 8lbs ... justSlim has saved me :)
Victoria Stone

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Been on JS plan for 14 weeks now and have lost 29 pounds. Am definitely seeing a big difference in my shape now and feeling so much better. Hope my 2 pounds a week average continues!!
Lesley Jubb

All of our packages include a free trial so if you change your mind you can cancel within 5 days and pay nothing. Sign up with complete confidence... we are so sure that you will lose weight, we've guaranteed it!

After one month your membership will be automatically renewed and you can cancel at any time.


If you wish to cancel your free trial or your justSlim account, please refer to the WorldPay FuturePay Confirmation email you received when you signed up. Follow the instructions to login to your FuturePay account where you will be able to cancel your account.

Alternatively, submit a support ticket to justSlim stating your FuturePay account number and indicating why you wish to cancel. We will then process the cancellation on your behalf.

How does the Free 5 Day Trial work?

The free 5 day trial allows you full access to all of the features and functions of justSlim. If you cancel within 5 days of signing up you won’t be charged a thing. Refunds cannot be issued after your initial 5 day trial.

Do I get a Free 5 Day Trial with any package?

Yes, all of our packages include a free trial so if you change your mind you can cancel within 5 days and pay nothing. Day 1 of your free trial is the day you sign up.

What types of payment do you accept?

Currently we accept Visa debit, Visa credit, Visa Electron, Mastercard debit, Mastercard credit, Maestro and JCB. We do not accept PayPal. At this time we only accept payments online so we will not be able to accept an order over the phone.

Can I cancel my account at any time?

Yes, you may cancel your account at any time and you will not be charged thereafter.

System Requirements

You need to install Silverlight in order to run the justSlim software. This is a free download for your PC or Mac, and you might have it on your system already. Please click here to set up your computer so it is ready to run justSlim.

Your data is safe and secure

Our state-of-the-art computer servers are protected by 24-hour surveillance. Our product software and infrastructure is updated regularly with the latest security patches. Our network is protected by an enterprise-class firewall to keep your data safe.


What web browsers work with justSlim?

Internet Explorer 7 and higher, Firefox and higher, Safari 3 and higher, Chrome 4 and higher. Click here for more.

Any questions before you sign up?

If you have any questions about JustSlim or the sign up process just submit a support ticket to JustSlim and we'll get right back to you.

Got terms and conditions and privacy policies?

Here are our Terms and Conditions and our Privacy Policy.