SEA was heralded as a key new tool that would drive profound changes in the consideration of alternatives and in addressing cumulative effects. Whilst it may not have quite lived up to the pre-launch hype we now have substantial experience of SEA and EIA in the UK. This webinar has brought out key lessons learned from a range of EIA Quality Mark registrants to identify how well the assessments sit alongside each other and what more we can do to improve their interaction in the future.