Climate Crisis Commitments

St John's College acknowledges the current climate emergency as the defining issue of our time. As one of the largest Colleges of the University of Cambridge, St John's will take steps to reduce its greenhouse gas emissions to net zero before the UK Government's target date of 2050, with a steep reduction by 2030.

Addressing the climate emergency affects every element of our individual and collective lives. When faced with an enterprise as big and diverse as the College, with all its people, activities and operations, it can be hard to decide where to focus. 

The College’s has now adopted a series of commitments supported by an action plan in addition to a headline manifesto. 

'This global emergency cannot be ignored' - Master of St John's reveals action plan to tackle climate change 

Climate Crisis: Commitments and Action Plan

Climate Crisis Statement


St John’s College has committed significant resources in a variety of environmental areas over recent years with a great deal of success. These initiatives include measures to reduce energy consumption and emissions of Carbon Dioxide (CO2), improve recycling (see College recycling points), and reduce water consumption.

The College has an Environmental Policy which directs College activities towards a sustainable approach and is in the process of preparing a Sustainability Framework. 

The Environment Committee was replaced in 2019 by a new Governance structure consisting of two committees: the Climate Crisis Committee will set strategy, identify goals and monitor performance, and the Sustainability Forum will bring together students, staff and Fellows and deliver a range of ‘bottom-up’ initiatives. 

An Energy Working Group has been established in 2021 to research, explore, develop, model and recommend energy transition measures to achieve the College’s agreed and published carbon reduction targets for its operational estate.

Click on the image below to see the full St John's College 2020 Climate Crisis Annual Summary in brief (2 pages).

CCC summary

Click on the image below to see the Sustainability Forum 2020/21 Summary of Activities.

Sustainability Forum summary




Climate Crisis Award

St John’s College Sustainability and Climate Crisis Award

The St John’s College Climate Crisis Award will fund a project proposed by PhD students at the College entitled: “The hum of bees is the voice of the garden”: Increasing College’s impact on wildlife diversity via pollinator housing.

Filip Boskovic and Campbell Stuart Matthews, along with a colleague from BeekeepingGirton College, Djordje Ogrizovic, will work with the College to develop plans for installation and maintenance of bee hotels on the College site and in gardens of College properties in Cambridge. This will be supported in the long term by the College’s Beekeeping Society, of which Mr Matthews is currently the President.

The project’s main goal is to provide strategic habits for sun pollinators with a focus on wild bees and butterflies. Additionally, it will provide sustainable mason bee colonies. 

Outcomes and benefits: 

  1. Increase biodiversity of flora and fauna by providing pollinator housing 
  2. Biodiversity monitoring of insects and pollinators via iRecord 
  3. Biodiversity education 
  4. Sustainability of the project is ensured via the Bee Guardian scheme 
  5. Continuity of College’s biodiversity action plan (in addition to bird and bat boxes) 

The project team will set up eight medium-sized insect hotels and will introduce mason bee cocoons in Spring 2022 in predetermined locations. Four times per year they will monitor insect biodiversity in hotels and data will be provided via iRecord. In the Autumn 2022 they will run educational events with on-site monitoring of mason bee nests for the College community. 


Biodiversity: iRecord

Photo of a woodpecker and chick by Dr Joana Meier
Photo of a woodpecker and chick by Dr Joana Meier

Biodiversity @ St John's

We're very keen to know more about what animals inhabit St John's with us, so everyone can now record sightings of wildlife in the St John’s College grounds via iRecord

Sightings which note where and when a particular animal was seen are very useful to help us better understand the College site and biodiversity in Cambridge.

The University’s Biodiversity Action Plan (BAP), published in 2020, aspires to build on the existing baseline biodiversity surveys and engage the University community in biological recording. Records of where and when particular species are seen provides a broader picture of the existing biodiversity of an environment and contributes to data sets used for research, conservation, and planning. Ongoing monitoring of wildlife will ensure we understand which species are using the estate and how this changes over time.

Anyone above the age of 13 can register for an iRecord account and once you join the St John’s College group you’ll be able to view a map of all the recent sightings.

So get out your best cameras and binoculars (human eyes are also fine) and let us know what you see!

How to record wildlife at St John’s:

  1. Download the iRecord App or visit the website.
  2. Create an account
  3. Select ‘Activities’ and find ‘St John’s College Cambridge’ or go directly to the St John's College group
  4. Select the star to add St John’s to your ‘activities’
  5. Submit evidence of wildlife sitings to iRecord
  6. Use ‘St John’s College, Cambridge’ as your location if you’re on the main site or the name of the road or area if elsewhere in Cambridge.

The University’s detailed user guide is available here



Environmental policy

St John's College acknowledges the current climate emergency as the defining issue of our time. As one of the largest Colleges of the University of Cambridge it will take steps to reduce its greenhouse gas emissions to net zero before the UK Government's target date of 2050, with a steep reduction by 2030.

St John’s College realises that sustainability is not a one-time organisational initiative but a deep-rooted outlook for the wellbeing of future generations. The College will therefore seek to continually improve its environmental performance and will routinely review its progress, and this policy, to position itself at the forefront of responsible environmental practice.

St John’s College will comply fully with all relevant environmental legislation and will actively promote environmentally conscious behaviour from all members of College staff, students, Fellows and guests. The College will continue to manage environmental initiatives and report to the Council through the Climate Crisis Committee and Sustainability Forum. Implementation of initiatives will be through existing College structures and relevant Committees where possible.

Whilst considering all areas, the College will place particular emphasis on the following key topics:

Energy and Water Consumption

St John’s College will take steps to inform itself of excessive consumption in all areas and implement measures to mitigate this where practicably possible. The College will actively pursue all energy and water reduction initiatives that are deemed practical to implement. The College will incorporate energy and water efficient measures into its long-term strategic development. The College recognises the benefits of setting realistic targets and will announce such reduction targets at the earliest possible time.

Recycling and Waste Management

Where practicably possible, St John’s College will seek to divert waste from entering landfill by following the widely recognised Waste Hierarchy. It will look to reduce the amount of potential waste entering the College system (by purchasing items with reduced packaging), re-use items at all opportunities (utilising such schemes as composting), recycle unwanted waste (by correctly segregating waste into relevant streams), and only as a genuine last resort should waste be destined for landfill. The College will responsibly dispose of white goods, electrical appliances and IT equipment, in accordance with current legislation.

Sustainable Procurement

St John’s College will promote a purchasing policy that gives preference for goods and services from sustainable and environmentally responsible sources. The College works on the basis of ‘reduce, reuse, recycle’ and recognises that each purchasing decision has an impact on the environment. The College aims to maximise the use of local business to reduce harmful emissions from excessive transport. The College will mitigate the use of hazardous substances in line with current legislation.


St John’s College will take steps to promote the use of environmentally friendly transport, both for business use and commuting to work/study. This includes encouragement for public transport, cycling, and a reduction in the use of College vehicles in addition to discouraging flying where possible and recommending use of the University’s offsetting scheme where necessary.


There are more ways to recycle waste in Cambridge than you might think. As well as standard blue recycling bins, which will take many items, other materials can also be disposed of in red British Heart Foundation bins and battery recycling buckets.

St John's is currently working to increase recycling rates and there are plenty of recycling points throughout College premises. Below is a map of where you can find recycling points on the main College site. All Hostels have independent recycling facilities, provided by the City Council.

Battery and printer cartridge recycling
Buckets and bags can be found in the JCR, SBR, Porter's Lodges and Library.

British Heart Foundation bags and bins
Books, bric-a-brac, cutlery, clothing, CDs, DVDs, handbags, electrical goods, leather goods, mobile phones, shoes. Bins are located in Cripps. Additional collection points are available at the end of Easter Term.

Collection points for Christmas cards and stamps can be found in Forecourt Lodge. Sand pots for cigarette butts can be found in designated smoking areas.

WEEE recycling
The College offers a WEEE recycling scheme. WEEE stands for Waste of Electrical & Electronic Equipment recycling - so anything that has a plug or needs batteries for power. There is a green bin located in the Maintenance Yard (at the end of Cripps Lane) for this purpose, and when full, this is emptied by Computer Disposals Ltd (CDL). We are able to accept all items which either have a plug or take batteries, such as kettles, microwaves, toasters, etc., as well as batteries. If you do have batteries that need recycling please drop them at Forecourt Porter’s Lodge or bring them directly to Vicky Jeffries in the Maintenance Office. For any queries please contact Vicky on  v.jeffries@joh.cam.ac.uk.

Vegware bins
Takeaway containers from the BDR are a plant-based product called ‘Vegware’. In order to be properly recycled, these are taken away to be commercially composted. Bins for Vegware are in the BDR as well as in Cripps and Forecourt.

recycling points map
what goes in your bins


Click on the image below to see what the St John's Catering team have been doing regarding sustainability.

sustainability in catering

Environmental timeline

In addition to the main projects listed, the College takes every opportunity during refurbishment work and routine maintenance to reduce its environmental impact. This includes items such as energy efficient light bulbs and boiler upgrades. This timeline will be updated as further projects emerge.

View the Environmental Timeline