There are three units in Brentwood District and they meet on Tuesday and Wednesday evenings.

Argonauts ESU (incorporating Chaos ESU)

Meets on Tuesday evenings from 8.30pm to 10pm at either Hutton (All Saints) Scout HQ or 1st Shenfield Scout HQ (alternating each term). The unit is partnered with Hutton (All Saints), 1st Shenfield and 3rd Hutton Scout Groups. Check the What's On section of the site to find out where the unit is meeting this term.

Odyssey ESU

Meets on Wednesday evenings from 8pm to 10pm at 1st Warley Scout HQ. The unit is partnered with 1st Warley and 1st West Horndon Scout Groups.

Orpheus ESU

Meets on Wednesday evenings from 8.45pm to 10.30pm at 1st Doddinghurst Scout HQ. The unit is partnered with 1st Doddinghurst, 1st Pilgrims Hatch and 1st Blackmore Scout Groups.