My lawyer has suggested that it will improve my chances of getting more contact if I do parenting classes – who runs them?

Look on your local council web site to see if they run any suitable classes, or try contacting organisations like Parent Network Scotland (https://www.parentnetworkscotland.org.uk/) or Mellow Parenting (https://www.mellowparenting.org/). A Google search should show up smaller local organisations in your area. You may find that some classes say that they are only for parents who have contact with their child – try politely and firmly to persuade them that you need the training to help resume contact.