Welsh Harp Environmental Education Centre

Birchen Grove, London, NW9 8RY  welshharpcentre@thames21.org.uk.

Location Map

The Welsh Harp Environmental Education Centre (WHEEC) is located on a 15 acre woodland site adjacent to the Welsh Harp Reservoir, where Thames21 offers a range of environmental programmes and community volunteering events, affording the opportunity for people to experience and learn about the natural environment first hand.


For many years, pupils have been enthused by their educational experiences at WHEEC. Thames21 is continuing in that tradition, with inspirational learning outside of the classroom experiences – to develop new skills and build confidence, through discovery of the natural world. Throughout 2016-17 we will be expanding the range of activities that are on offer.


Our sessions are curriculum linked and support the development of pupils, stimulating them to learn outside of the classroom and to further expand their knowledge of sustainability. View our PDF with our programme here.

We also offer informal educational experiences during the school holidays. Costs and programme will be advertised closer to the date.

Session costs and times:

The following times can be modified, please discuss when booking. We invoice once the booking is complete.

Half Day: 10am to 12 noon / 12.30pm to 2.30pm, £100 per class.
Full Day: 10am to 2.30pm, £190 per class

How to Book:

Please call 0207 515 3337. Alternatively, you can book a session here and we will call you back to confirm your booking and discuss any specific arrangements. We will then send you a confirmation email and look forward to welcoming you to the Welsh Harp Environmental Education Centre.

Before your visit we ask you to read through the information for teachers and group leaders.


The 5.5 hectares of woodland is used as an educational tool and outdoor classroom but is also a very important habitat to the many species who reside there.


As an example, 250 bird species are recorded on the adjacent Welsh Harp Open Space (Welsh Harp Reports 2001, 2014). Looking closer at our education centre site, the area offers suitable habitat to biodiversity action plan species which previously bred at the Welsh Harp Open Space  including skylark Alauda arvensis and common linnet Carduelis cannabina. Appropriate habitat management may encourage these species to return.


Since July 2016, a group of local volunteers have been meeting to assist with the maintenance and upkeep of the site.

The site has a woodland management plan, which sets the objectives for the conservation events, keeps the site safe for visitors and provides a better learning environment to the classes and groups who use the woodland.

To find out when the next Friends of the Welsh Harp Environmental Education Centre is taking place, please keep an eye on our events page. We normally meet on the third Sunday of every month. Full contact details of the event leader can also be found on the event information page.

Long term, we are looking for volunteers to lead the events themselves. We will provide the training by our free accredited training course, Leading a Waterway Clean Up.