Category: Uncategorised

Green Impact Auditing at Imperial

By Priyal Pajwani (Sustainable Imperial Student Ambassador) 

Priyal shares insights into her role as a student auditor for the Green Impact programme – a toolkit of impactful activities which Imperial staff teams can take to improve sustainability across the university and at home. 

As a Master’s student in Business Analytics and AI at Imperial College Business School, I became involved with Green Impact through the Sustainable Imperial Ambassador Programme. With a longstanding interest in sustainability, I was keen to understand how Imperial approaches it at an institutional level, particularly how wider commitments translate into decisions and actions across individual teams.  

What is Green Impact? 

Green Impact is a sustainability programme run by Students Organising for Sustainability UK (SOS UK) and is used at Imperial to support teams in improving their environmental and social practices. It is a United Nations award winning programme that has been used by more than 2,200 organisations, with participating teams working through a toolkit of practical actions covering areas such as energy, waste, travel, procurement and biodiversity.  

As part of the Sustainable Imperial Ambassador Programme, this volunteering opportunity offered an interesting way to explore sustainability while applying an analytical mindset to something new. The role involved reviewing evidence submitted by the Imperial departmental teams, assessing actions against defined criteria, and speaking directly with the staff responsible for implementing these initiatives across Imperial. 

Training to be an auditor

Students taking part in Green Impact auditor training session

Before beginning the audits, all student volunteers complete a 2.5 hour training session delivered on campus from SOS UK in environmental auditing and evaluating environmental behaviour change. The training is approved by the Institute of Sustainability and Environmental Professionals (ISEP) and provides the framework needed to carry out the audits consistently and objectively.  

After completing the training and practical audits, student auditors also receive a digital credential recognising the skills and experience gained through the programme.  

How sustainability takes shape across Imperial 

Following the training, students were placed into groups of two or three and assigned departments to audit. Alongside two other student auditors, I completed audits for Library Services, the Grantham Institute for Climate Change and the Environment, and the Environmental Research Group.  

Each audit began with reviewing the award level the team was working towards and the evidence already submitted against the relevant Green Impact criteria. Within our group, we divided the assessment according to our individual areas of interest across sustainability themes, before meeting the department to discuss its work in greater detail. The evidence we reviewed took several forms, from invoices and photographs to meeting minutes, internal surveys and staff communications, depending on what was required to demonstrate each action. Meeting the teams was therefore an important part of the process, as it provided an opportunity to speak directly to the staff about the initiatives they had implemented, and maintained within their departments.

“Meeting the teams was therefore an important part of the process, as it provided an opportunity to speak directly to the staff about the initiatives they had implemented, and maintained within their departments.”

Each audit reflected the different functions and priorities of the respective teams, for example the Library Services focused strongly on staff and student engagement, with initiatives including Hedgehog Awareness Week, office planting and wider biodiversity activities. At the Grantham Institute, sustainability was reflected across both its climate research and policy work and daily operations, while the Environmental Research Group incorporated it into research practices through shared laboratory equipment, responsible procurement, waste reduction and biodiversity initiatives.  

Student auditors with Grantham Institute staff during their Green Impact audit

Overall, the programme gave me the opportunity to have conversations with senior staff working in sustainability, collaborate with students from academic backgrounds different from my own, and see how smaller actions across individual teams can collectively contribute to wider institutional objectives. The structure was also flexible around academic commitments; once the evidence review and team discussions were completed, students could finalise their audit documentation independently and submit it by the end of the day, with this final stage generally taking less than an hour.

Gaining career skills and experience

Beyond its institutional relevance, I found the programme useful as an early career professional currently applying for graduate roles. It gave me experience reviewing evidence against defined criteria, building on my analytical skills, while also developing my ability to ask appropriate questions and communicate professionally with stakeholders.  

More importantly, I had to provide feedback to senior staff and explain why the evidence did or did not meet a particular standard. All of this within two days gave me an experience to discuss in applications and interviews beyond university projects and traditional internships. For students interested in areas such as analytics, consulting, risk, operations or sustainability, it is a relatively small time commitment for an experience that can add a different dimension to an early career profile.

“For students interested in areas such as analytics, consulting, risk, operations or sustainability, it is a relatively small time commitment for an experience that can add a different dimension to an early career profile.”

Through my contributions to the programme, I was invited to attend one of Imperial’s Staff Sustainability Champions meetings, where I contributed from a student auditor’s perspective and provided recommendations on how teams could strengthen the evidence supporting their work. It subsequently led to an invitation from Imperial’s Library Sustainability Group to speak at the European Business School Librarians Group (EBSLG) Conference, hosted at Imperial this year, where I presented my experience as a student auditor and discussed the Green Impact programme and auditing process.  

These opportunities demonstrated the value placed on student perspectives within Imperial, including at senior levels, while also showing how involvement in a programme such as Green Impact can lead to opportunities beyond the initial scope of the role. 

Priyal speaking at ESBLG event

Getting involved 

This year’s Green Impact audits at Imperial are taking place on Wednesday 21 October. If you’d like to volunteer, complete the application form by 14 October.  

SOS UK also run further training sessions throughout the year across the UK which you can learn more about on their Green Impact Audting webpage.  

5 ways to make your webpages more sustainable

Want to learn how you can make a positive impact as a web editor? Check out our 5 practical ways to reduce unnecessary resource use and support a more efficient user journey.  

5 ways to make your webpages more sustainable 

  1. Delete outdated content: And also set up regular reviews to remove content and pages that no longer serve a purpose. Use the web sustainability content checklist to help you review your content. 
  2. Optimise content: Keep pages short and purposeful with concise text. You can read the writing for the web guide here: Writing for the web.   
  3. Optimise images: Use lighter image formats like JPG rather than PNG and reduce file size as much as possible. A good size to aim for is around 300KB, and no larger than 2MB. You can use a free, open-source software like BeFunky to convert or scale your images.    
  4. Avoid auto-playing videos: Giving users the ability to choose when to play a video helps ensure meaningful engagement, and also reduces the energy needed to run the page. You can read further guidance on embedding videos on the Creating accessible video and audio webpage. 
  5. Improve navigation so information is easier to find: This should result in fewer clicks (fewer emissions from page loads) and less time searching (less energy consumed by the user’s device). For example, you can learn more about adding accessible links to ensure your links help guide the user to where they want to go.  

You can identify areas for improvement by using a tool such as Website Carbon or Ecograder which can provide a sustainability rating for each webpage. After making improvements, you can then retest the page and report on the carbon emissions saved per page load.   

For further guidance you can read the full Web Sustainability Guidelines (WSG) developed by Centre for Environmental Policy students and the digital team, adapted from the World Wide Web Consortium’s (W3C) WSG.

Yunxi Shen, MSc Environmental Technology, one of the students that worked on the project, shares the importance of sustainable web design: ‘Improving the sustainability of our web content not only reduces unnecessary energy use and emissions, but also has several co-benefits, such as improving user-experience, accessibility, and site performance. While the carbon footprint of individual webpages may seem small, this compounds across Imperial’s entire digital estate and the page views it serves.’ 

This set of guidelines also forms part of Imperial’s sustainable communications guidelines, and is part of Imperial’s wider strategy and ongoing efforts to address the challenges of climate change, biodiversity loss and pollution.  

Sustainable Imperial case study 

This year the Sustainable Imperial website was redesigned to align with the new Sustainable Imperial Strategy 2026-2031 and demonstrate application of the WSG. Using page load emissions ratings from the Website Carbon tool, the team calculated that the maximum emissions per page load for the Sustainable Imperial website was previously 1.03 g CO2 and after applying WSG all pages are now under 0.3 g CO2, a 70% difference. The estimated yearly carbon saving from the website changes is 8.18kg CO2, which is as much CO2 as boiling water for 1109 cups of tea! 

Have a go at applying WSG to your pages and see how much you can save! 

Nature, Pizza & Community: A day to remember at Silwood Park

By Dr Vivienne Groner (Postdoctoral Research Associate, Department of Life Sciences, Silwood Park)

A staff member carries a tower of pizza boxesOn a gloriously sunny day in June 2026, staff and students came together for our inaugural Nature & Pizza Day, a wonderful celebration of community, curiosity, and the incredible natural environment right here on our Silwood Park Campus.

The afternoon kicked off with a guided tree walk, where participants discovered just how many weird and wonderful specimen trees we have growing around us. From unusual bark textures of the prize-winning Betula dahurica to remarkable growth habits like Quercus x turneri and a unique hybrid Oak from Kew gardens, it was a fascinating reminder that extraordinary nature can be found just outside our doors if we take the time to look.

We also learned that it is not easy to tell what trees might be best adapted to climate change; the best candidates seem to be the ones that have been doing well in the last 10 years, including Quercus faginea and Q. georgiana.

Staff members playing games on the Silwood lawnFrom there, the competitive spirit took over with a BioBlitz, as teams spread out across campus to identify as many species as possible in 30 minutes. The results were nothing short of impressive: our winning team recorded an incredible 76 species, a testament to the rich biodiversity thriving on our doorstep. Prizes were fittingly nature-themed, including the much-coveted mascot ‘Leaf’ Tea Towel, a Bee Saving Kit, and some well-deserved vegan sweets.

The afternoon rounded off with veggie pizza, drinks, and good company, alongside the successful launch of our new reusable cup system for events, a small but meaningful step forward in reducing single-use waste on campus. With the sun still shining, the grass became the setting for some light-hearted games, including a very popular game of four-in-a-row, handcrafted by one of our very own technicians.

Beyond the fun, days like this serve an important purpose. They give us the opportunity to step outside, slow down, and reconnect with the remarkable environment we are so fortunate to work in. The diversity uncovered during the BioBlitz alone is a powerful reminder of what surrounds us and why it is worth protecting.

A huge thank you to the Silwood Sustainability Champions, the Silwood Social Committee, and CABI for organising such a memorable event, and Sustainable Imperial for providing the pizza and drinks. We hope this becomes a firm fixture in the Silwood calendar!

Interested in getting involved in future events? Look out for upcoming announcements from the Silwood Sustainability Champions and Social Committee.

How we kept our global top 10 sustainability ranking

This week saw the release of the annual QS World University Rankings: Sustainability. More than 2000 universities worldwide have been evaluated on their environmental and social impact and governance.

Imperial retained its position as joint 7th most sustainable university in the world for a second year running.  

With competition this strong, how did we manage to hold firm to our position?

(more…)