EOS's biggest counter-drone deal starts with EOS posting the collateral

A £370m Gulf contract that cannot begin until the contractor puts up guarantees and wins export licences.

Share
NiDAR command-and-control interface on a laptop screen
Image: MARSS (product page) · source
DefenseWireCounter-UAS

A £370m Gulf contract that cannot begin until the contractor puts up guarantees and wins export licences.

Electro Optic Systems has signed the largest contract in its history, a £370m (~A$700m) nation-wide counter-drone system for an unnamed Gulf Cooperation Council state, but it is not yet live: performance cannot start until conditions are met, and EOS says there is no guarantee if or when that happens.[1]

£370m
Contract value (~A$700m)
EOS release [1]
£37m
Performance bond posted 12 Aug 2026
EOS release [1]
£74m
Bank guarantee still to be provided
EOS release [1]
—
Customer identity
not disclosed

The conditions are the story. EOS has already posted a £37m performance bond, 10% of contract value, secured by a £40.3m cash deposit at a commercial bank. It still has to provide a £74m bank guarantee against a matching £74m customer advance, and obtain export licences for system components within two months of receiving the customer's paperwork. It also needs consents and "further accommodation" from WHSP and its guarantee providers.[1]

Chart · conditions precedent

What EOS has to put up before the £370m contract starts

£m, as stated by EOS. Solid = done; hatched = still outstanding at announcement.
DoneOutstanding
Contract value£370m
Performance bond (10%)£37m · posted
Cash deposit securing the bond£40.3m · posted
Bank guarantee (EOS)£74m · pending
Advance payment (customer to EOS)£74m · pending
Export licencespending; no value
Source: EOS release, 9 Oct 2026 [1]. Bars on one scale; amounts are not additive. Licences must be obtained within two months of receiving customer documentation.

The core is NiDAR, the command-and-control layer EOS picked up with MARSS. Radar, electro-optical and sonar sensors and the initial hard-kill and soft-kill effectors are third-party. EOS is the integrator, which explains the cash profile: it flags a "significant short-term working capital funding requirement" expected to turn positive in mid-2027. More than 80% of revenue is expected within 12 to 24 months of the contract going unconditional; about 20% is four years of support.[1]

NiDAR command-and-control interface on a laptop screen
NiDAR, the MARSS command-and-control software at the core of the system. EOS is the prime and integrator; sensors and effectors are third-party.[1][2]Image: MARSS (product page) · source
Chart · revenue timing

How EOS says the revenue lands

Share of contract value, per EOS. Clock starts only once the contract is unconditional.
Within 12-24 monthsmore than 80%
Support over four yearsabout 20%
Source: EOS release [1]. "More than 80%" plotted at its 80% floor.
Electro Optic Systems, official channel · company promotional film, uploaded 12 Aug 2026 (PT). Not specific to this contract. · open on YouTube
Bottom lineAn integrator's balance-sheet bet on an acquired C2 layer, with capped and uncapped damages exposure. Watch the guarantees and licences, not the headline.

Sources

  1. EOS Holdings, 'Signing of £370M (A$700M) Contract for Nation-wide Counter-drone Defence', 9 Oct 2026. eos-aus.com
  2. MARSS, NiDAR CUAS product page (image and C2 description). marss.com
  3. Electro Optic Systems (official YouTube), 'EOS KILLS DRONES: Layered Counter-Drone Defence', uploaded 12 Aug 2026 (PT). www.youtube.com