Managed the marine licensing applications for a major coastal residential development. Undertook technical assessments on underwater noise, physical processes, Marine Conservation Zones and the Water Framework Directive. Coordinated public consultation requirements. Successfully obtained consents for three phases of the project.

Brighton Marina Outer Harbour Development (2013 - 2015)

  • Managed the environment department
  • Regulated development and dredging projects
  • Undertook environmental audits
  • Ensured the company’s compliance with environmental legislation. Responded to Government consultations relating to new legislation
  • Formulated and implemented company environmental policy
  • Undertook environmental impact assessments and obtained consents for internal development projects
  • Represented the Port of London Authority and the UK Major Ports Group at national and European levels

New offshore disposal site, Outer Thames Estuary (2012 - 2015)

Led the coastal processes chapters of the Environmental Statement for a major port development on the Humber Estuary. Carried out the Water Framework Directive Assessment. Supported the developer in discharging Development Consent Order conditions.

DP World London Gateway Port Assurance Team (2010 - 2015)

Site supervision, Gladstone LNG Facilities (2010 - 2011) 

Led the physical processes chapters of the Environmental Statement for Hornsea Round 3 Offshore Wind Farm. Coordinated technical studies on hydrodynamics, water and sediment quality, sediment transport and scour. Liaised with regulators to resolve technical issues. Supported Written Questions and Hearings for the Development Consent Order process.

Environment Manager, Port of London Authority (2005 - 2010)

Sizewell C and Moorside new nuclear developments (2015)

Led an extensive environmental characterisation exercise for Harwich Haven Authority to establish a new offshore disposal site for dredged material.  Led a site selection exercise; produced a scoping report to identify potentially significant impacts; organised public consultation events; co-ordinated site-specific surveys; undertook a Habitats Regulations Appraisal; and arranged permissions and licences.

Career experience

Scientific advisor to the Marine Management Organisation during the Development Consent Order process for the Sizewell C and Moorside new nuclear developments. Technical review of studies on physical processes, marine ecology, ornithology and fisheries.

Provided advice on environmental licensing and monitoring during the construction of London Gateway Port on the Thames Estuary. Undertook a Water Framework Directive assessment to support the maintenance dredging application.

Able Marine Energy Park (2013) 

Katherine (Harris) Holmes, director of Harris Holden, has 14 years' experience in the maritime sector, as environment manager for a major UK port and as a principal EIA consultant. Katherine's career highlights include:

Assisted in securing licences and developing the extensive environmental mitigation and monitoring programme for a Liquefied Natural Gas (LNG) export facility in the Port of Gladstone, Queensland Australia. 


  • Liaised with the Federal and State regulators and the port authority to ensure permits were granted on time and with reasonable conditions
  • Produced management plans to ensure the protection of sensitive environmental receptors (coral reefs, seagrass beds, mangroves, marine mammals and turtles) during the construction and dredging operations
  • Identified opportunities to combine monitoring programmes with other LNG partners to ensure best value for money

EIA support for Hornsea offshore wind farm (2012 - 2015)