Academic spotlight interview: Hannah Allen

From Crime Scenes to Classrooms: Hannah Allen’s Unique Path in Forensic Science

“Forensics is about finding justice for victims, ensuring the guilty are prosecuted, and protecting the innocent.”

Forensic Investigation MSc Course Director, Hannah Allen’s career spans decades of investigative work, a passion for forensic science, and a new role as an academic. In this Q&A-style blog, Hannah shares her thoughts on her career, her motivations, and the lessons she hopes to pass on to her students.

---

What inspired your interest in science and investigation?

“I was a bit of a geek. I loved learning, I loved books, and I loved reading. Science appealed to me because it combined logic with discovery. I took A-levels in chemistry, biology, and maths because I knew they’d open doors to a variety of fields.

“Even as a teenager, I was fascinated by investigation and was a police cadet during my A-levels. I loved being part of the process of finding things out and solving problems. My family weren’t surprised when I eventually chose a career that combined science and the police—I was always asking questions and wanting to understand how things worked.”

How did you transition from science to forensic investigation?

“I started at Oxford studying biochemistry but quickly realised that lab work wasn’t for me—I needed to be around people. After a scholarship in Israel and some soul-searching, I switched to psychology at Liverpool. That’s where I found my passion for investigation and crime analysis.

When I switched to psychology at Liverpool, I got involved in profiling and police work, which opened my eyes to the possibilities in forensic science. I worked with the Metropolitan Police as a crime analyst and later transitioned to being a crime scene investigator. It was a brave move at the time, but it set me on the path I was meant to be on.”

What was your experience as a crime scene investigator?

“Being a crime scene investigator is about speaking for victims who can no longer speak for themselves. It’s a demanding job—you might get called out at 3:00 a.m, work 16-hour days, and face emotionally intense situations—but it’s incredibly rewarding. You’re searching for truth and justice, ensuring the guilty are held accountable, and the innocent are protected.

“I’ve dealt with everything from burglaries to major crime scenes like murders. Early in my career, I focused on evidence collection, but as time went on, I realised how important it was to connect with victims and provide reassurance. You’re not just there for the science; you’re there for the people.”

How do you see forensic science evolving?

“Some things haven’t changed much, like the basics of crime scene work. But technology, like digital forensics and advancements in DNA sensitivity, has revolutionised the field. For example, we can now extract DNA from smaller samples, but that also means we have to carefully explain how the DNA got there.

“The sensitivity of DNA testing has improved dramatically. We can now get profiles from much smaller samples, but that comes with challenges, like explaining how the DNA got there to avoid contamination allegations. Digital forensics is another growing area. Smartphones, digital footprints, and online activities are increasingly part of investigations, and crime scene investigators need to keep up with those advancements.”

What drew you to academia?

“I loved my operational career, but I wanted to inspire the next generation. Cranfield appealed to me because it values real-world experience. The students here aren’t just learning theory—they’re learning from people who’ve been in the field. It’s a great way to bridge the gap between academia and practice. I also appreciate Cranfield’s focus on practical learning. The week-long modules mimic the intensity of real-world work, which prepares students for the challenges they’ll face. For me, it’s about helping students connect what they’re learning to real-world problems, whether through projects, research, or industry collaborations.”

What advice would you give to aspiring forensic professionals?

“This isn’t just a job; it’s a responsibility. You need to approach it with integrity and a commitment to truth. Forensic science isn’t glamorous—it’s hard work. But if you’re dedicated and willing to learn, it’s an incredibly rewarding career. And remember, you might not know exactly what area you’re passionate about until you explore it. I always tell students: explore everything. Sometimes you don’t know what area you’re passionate about until you’ve seen it first-hand. When I started, I didn’t know much about forensic anthropology, but later, I wished I’d studied it more. Keep an open mind, because the field has so many opportunities.”

What do you want your students to take away from your courses?

“I want them to understand the importance of integrity in this field. Forensics is about finding justice for victims, ensuring the guilty are prosecuted, and protecting the innocent. I also hope they realise how their work fits into the bigger picture of the criminal justice system.”

The MSc in Forensic Investigation is excellent grounding for the role of a Crime Scene Investigator (CSI).  I want to inspire them to have the same rewarding career I have had.  Whilst operational I had the responsibility of being on interview panels for roles within CSI and I want to give my students the skills to set them apart when they are being interviewed.”

What excites you most about your role at Cranfield?

“I love that Cranfield offers hands-on, practical learning experiences. The week-long modules and variety of electives mean students can tailor their education to their interests. It’s about giving them the tools and confidence to succeed in the real world. I’m also passionate about collaborating with police forces on research projects. I want to ensure our work at Cranfield solves real problems. It’s not just about academics—it’s about making a difference in the field.”

What do you do to unwind outside of work?

“Life is busy with three boys who are active in sports, but I’ve found time to start wild swimming. It’s refreshing and a great way to recharge. Family, nature, and staying active keep me grounded. It’s a full life, but I wouldn’t have it any other way!”

See here for more 

• Forensic Investigation MSc 
• Cranfield Forensic Institute 
• Hannah Allen