Goals in the first half by Angelo Balanta and Harry Gibbs sealed the Sports’ fate and left them still in the thick of the relegation battle – in 23rd place and four points below the safety line.
They’ll hope to make up ground when they host Farnborough on Saturday.
See pictures from Hornchurch-Borough by Lydia and Nick Redman on this page and those linked. Get all the latest from Priory Lane – including Simon Leslie’s latest column – in the Eastbourne Herald on Friday.
21. Lydia Redman
Hornchurch v Eastbourne Borough, National League South Photo: Lydia Redman : Lydia and Nick Redman
22. Hornchurch v Eastbourne Borough pictures by Lydia and Nick Redman (103).jpg
Hornchurch v Eastbourne Borough, National League South Photo: Lydia and Nick Redman
23. Lydia Redman
Hornchurch v Eastbourne Borough, National League South Photo: Lydia Redman : Lydia and Nick Redman
24. Hornchurch v Eastbourne Borough pictures by Lydia and Nick Redman (101).jpg
Hornchurch v Eastbourne Borough, National League South Photo: Lydia and Nick Redman