Someone should be here 11am to 5pm every day (including weekends). We can take calls during this time, but we also run an enquiry desk on our visitor centre, so can't always get to the phone. If you leave a message we will call you back - but try to leave a landline number if possible, as it's expensive for us to call mobile phones. Thanks!
Our postal address is: Information Service, Centre for Alternative Technology, Machynlleth, SY20 9AZ Wales