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.
17. Lydia Redman
Hornchurch v Eastbourne Borough, National League South Photo: Lydia Redman : Lydia and Nick Redman
18. Hornchurch v Eastbourne Borough pictures by Lydia and Nick Redman (102).jpg
Hornchurch v Eastbourne Borough, National League South Photo: Lydia and Nick Redman
19. Lydia Redman
Hornchurch v Eastbourne Borough, National League South Photo: Lydia Redman : Lydia and Nick Redman
20. Lydia Redman
Hornchurch v Eastbourne Borough, National League South Photo: Lydia Redman : Lydia and Nick Redman