This took a little longer to come than the other products we purchased ,but it was very healthy and worked well in the bubbling experiment.
Delivered safely and put in one. Won’t know how effective till later but pleased with order
Our Values
At Darwin Biological, our values are more than words—they shape every product we create, every interaction we have, and every decision we make. We’re proud to stand by the following principles:
Fun
We believe science should spark joy. Everything we offer is designed to be engaging, hands-on, and genuinely enjoyable. Relevance is key, but so is excitement. We want students to feel the thrill of discovery and the satisfaction of understanding.
Integrity
Integrity runs through every part of our business. From ethical sourcing and transparent supply chains to honest communication with customers and fair treatment of staff, we hold ourselves to high standards. Trust is earned, and we work hard to deserve it.
Respect
We treat everyone - staff, customers, partners - with respect and kindness. We listen, we value diverse perspectives, and we foster a culture where people feel safe, supported, and appreciated. Respect is the foundation of strong relationships and a healthy workplace.
Communication
We’re committed to clear, honest, and open communication. Whether it’s explaining a product, resolving a query, or advising delivery dates, we aim to be transparent and approachable. Good communication builds understanding - and understanding builds trust.
Family
We support flexible, family-focused working practices because we know life doesn’t stop at the lab bench. Our team is encouraged to balance work with personal commitments, and we extend that same empathy to our customers. We’re a business with heart and are proud to be a Living Wage accredited employer.
Education
We’re passionate about learning. Internally, we invest in continuous professional development (CPD) to help our team grow. Externally, we share knowledge through our website, newsletter, and resources—making science accessible to learners of all ages and backgrounds.
Corporate Responsibility
We passionately believe in Corporate Social Responsibility and this ethos influences everything we do.
The fundamental essence of Corporate Social Responsibility is that businesses should act in a manner that benefits the well-being of society and the environment rather than shareholders.
Environmental Responsibility
We take our environmental responsibility seriously and are always looking for ways to improve and promote greener working practices.
All of our specimens are British and preserved in-house, and we only work with suppliers with a proven commitment to animal welfare.
We refuse to pollute our planet unnecessarily, meaning we only use packaging that is reused, recyclable, and/or compostable.
Social Responsibility
Our team is committed to scientific education that is engaging, responsible and lots of fun, so that the next generation can be inspired to carry the baton forward. In line with this we support like-minded British institutions, such as the Linnean Society and Royal Entomological Society.
As a family company we believe strongly in flexible working that fits around our employees' family commitments and are proud to be a living wage employer.
Each year we give a percentage of our profits to charitable causes; we recently funded a tree planting scheme in our local village.
Let customers speak for us
Cow Heart
Delivery was very quick and the heart was a very good specimen, fully intact and ideal for demonstration use on open morning.
Stacey Ellis
Frozen Cow Heart
Worked great.
Really happy, worked great. Fast delivery. Buy this product from here every year because I know it works.
Laura King
E.Coli K12 Strain
Fast and convenient
Easy to order. Delivery very fast and nice sample. Will definitely order again
Richard Reece
Pond Water Species
Fish heads and E.coli
Delay in writing review as I wanted the teachers feed back on the fish heads. From a technician's point of view, so easy to shop here for fish heads. Arrived in an extremely timely manner in great condition and brilliant recycled packaging.
Great dissection material and yes we have stunk out the whole department!.
E. coli growing well. Thank you.
Chris
Frozen Fish Heads (Mackerel)
Save money
They are suitable to store in fridge for longer period. Individually packed and ready to use from your lab all the time.
Sadia Khurshid
Preserved Cow Eyes
Speedy delivery and very high quality. Would highly recommend
Jo Evans
Frozen Sheep Pluck (Heart, Lungs & Liver)
Class Practical
These arrived in perfect condition and were great for our students.
Jo Adams
Preserved Sheep Eyes
Excellent sevice
Excellent service. The pooter is ideal for collecting micro moths. I would recommend Darwin Biological as a company.
Customer Linda Carthy
Pooters
Oh dear!
Hi again,
I happily award five stars, as your level of Customer Care and courteousness during your call, (following my last review), deserves applause. Now though, onto the nitty-gritty …. Would you believe that, your second delivery of pond water was just as devoid of ‘visible life forms’ as the first. I’m truly not laying the blame at your feet, simply that, it must have something to do with oxygen depletion - that’s my guess. Just as a suggestion, I reckon a simple, secure ‘fit for purpose’ polythene bag, (like the ones a goldfish is carried in), and some air pumped would be a good alternative.
I’m NOT requesting a refund, as I spent hardly anything.
All the best
Jeanette
Jeanette Sitton
Pond Water Species
Algae Growth Medium
The growth medium arrived in good quality. It's easy to use following the guide provided. It's worth noting that one tube of solution is colourless, while the other one is slightly pale pink which may not be easily observed on the photos online.
Anonymous
Algae Growth Medium
Scenedesmus quadricauda
The algae arrived were in good quality and in adequate concentration which can be used for experiment right away. It offers flexibility without the need to grow it first before use. Very good.
Anonymous
Scenedesmus quadricauda