RTPI Planning Consultancy of the Year 2017 Indigo is one of the UK’s largest independent planning consultancies. We have a su ... ccess rate that’s second to none. In the last five years, we’ve secured a 'first-time' consent for over 95% of the projects we work on. A track record that clients appreciate. Indigo has been the best for 30 years. We intend to keep it that way. read more