A Which? member offer paid off for Simba

Simba already recognised the value of a Which? partnership after first securing a Best Buy licence back in 2019 and going on to take out Best Buy licences over time for six of its products, including a pillow and a mattress. These all did exceptionally well in our rigorous testing as they continue to deliver high standards.

They have continued to work with Which? as they're seeing direct success from their investment and have developed the relationship further by running an exclusive offer for Which? Members. For just over a month from 9 May to 20 June 2025, they gave members free products when purchasing Simba’s most popular items, including pillows, mattress toppers, duvets and mattresses. These included buy-one-get-one-free deals and free related products when making a purchase, such as a free duvet when buying a mattress.

The offer was promoted to Which? members by email and across which.co.uk, including the home page. It generated some very impressive results, including 651 code requests to take out the offer and 231 redemptions, with a fantastic 48% conversion rate on the pillow offer alone. Overall, Simba earned £35k from the promotion.

Our experience with Which?

Jon Moore, marketing and ecommerce director, Simba, says:

'Our customers consistently tell us that they trust Which? significantly more than other accreditations and reviews.

'We applaud Which? in championing fairness in the retail sector, including ensuring promotions are reflective and fair.

'We jumped at the chance to work in conjunction with Which? and were able to offer our best promotions exclusively to Which? members. This was a valuable new revenue stream and the exposure it gave us to Which? members was great.

'The Which? team are incredibly collaborative and we really look forward to working with them again.'

About Simba

Simba is a British company that designs and sells sleep products including mattresses, bedding and pillows. It's known for using data-driven design and patented technology to create mattresses that focus on comfort, providing support and temperature regulation for different body types and sleep styles.

Visit the Simba website for more details.

Which? works with you

Alex Manners, client relationship manager, Which? B2B, says:

'Working with Simba to provide an exclusive promotion for our Which? members was a remarkable success. We featured the offer prominently across our home page, in dedicated email campaigns and through hero banners on relevant pages.

'This collaboration was a pleasure, as it not only provided significant added value to our highly engaged membership base, but also resulted in a measurable increase in conversion for Simba while supporting our goal of helping consumers to buy safe, good-quality and good-value products.

'Simba’s consumer-first ethos and commitment to fair treatment align perfectly with our core values, making this a genuinely mutually beneficial promotion.'

Discover how Which? member promotions work by visiting our B2B website or fill in our form and we will talk you through the best options for your business.