By Simon Richmond, Senior Technical Officer   Following the announcement in the Autumn issue of the ARB Magazine (issue 186, page 7) that the HSE is now requiring full compliance with the Work at Height Regulations in relation to tree climbing operations, there has been much discussion and debate.   The relevant section of the Regulations is Schedule 5, which addresses requirements for personal fall protection systems. See www.legislation.gov.uk/uksi/2005/735/schedule/5. The