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Watchkeeper

British Army tactical surveillance drone in service since 2014, repeatedly delayed and operationally underperforming, now being replaced by Project Corvus.

On 16 September, the Ministry of Defence awarded Tekever up to £400m for AR5 aircraft to replace Watchkeeper, ending Project Corvus after its May competition produced no compliant bids.

Last refreshed: 1 October 2026 · Appears in 1 active topic

Timeline for Watchkeeper

#18 16 Sept

UK awards Tekever up to £400m for AR5

Drones: Industry & Defence

#14 28 Jun

Mentioned in: £5bn UK drone plan follows Healey exit

Drones: Industry & Defence

#10 15 May

Mentioned in: UK launches Apache drone wingman trial

Drones: Industry & Defence

#10 1 May

targeted for replacement after a decade of underperformance and delays

Drones: Industry & Defence: UK tenders £130M Watchkeeper swap

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Background

Watchkeeper is a British Army tactical surveillance drone, built for battlefield observation and targeting support. It entered service in 2014 and is now being replaced through Project Corvus.

Thales UK developed the platform with Elbit Systems through UAV Engines Ltd, using the Israeli Hermes 450 airframe as its basis. Its sensors support day and night surveillance, including electro-optical, infrared and synthetic-aperture radar collection.

The platform matters as a durable reference point for British Army tactical drone procurement. Its replacement by AR5 links the Army's surveillance requirement to a newer aircraft programme, while keeping Watchkeeper relevant to the history of the capability it supplied.

Key Issues

Army surveillance

Watchkeeper gives way to AR5

On 16 September, the Ministry of Defence selected Tekever's AR5 to replace Watchkeeper under Project Corvus, with a contract worth up to £400m and six aircraft first. The decision gives the British Army a successor after the May competition had produced no compliant bids.

For Watchkeeper, the award closes the replacement contest rather than extending its operational role. The tender had initially been valued at £130m to £156m before VAT, but the ministry moved to direct negotiations with Tekever after the competition failed.

Common Questions

What happened to the Watchkeeper drone programme?

Watchkeeper entered British Army service in 2014, seven years late against its 2005 contract, with full operational capability not declared until 2017 and substantial cost overruns against the original ~£800 million contract. The UK MoD issued Project Corvus in 2026 to replace it.Source: Lowdown drones-industry-defence Update 10

What drone is replacing Watchkeeper in the British Army?

Project Corvus is the UK MoD competitive tender to replace Watchkeeper, valued at £130-156 million. Confirmed bidders are Quantum Systems and Anduril (UK), with the contract running from May 2026 to at least 2031.Source: Lowdown drones-industry-defence Update 10

How long has Watchkeeper been in British Army service?

Watchkeeper reached in-service status in 2014 and full operational capability in 2017. It has been in British Army service for approximately 12 years by the time Project Corvus was issued in 2026 to replace it.Source: Lowdown drones-industry-defence

How the World Sees Them

Israel

Elbit Systems co-developed Watchkeeper via its UK subsidiary; the Israeli connection is not prominent in the Corvus replacement procurement, signalling a shift away from the Hermes-derived architecture.

Ukraine

Ukraine's rapid commercial drone iteration during its war has been the explicit reference point for why Watchkeeper's long-cycle development model is untenable for modern conflict.

United Kingdom

Watchkeeper is the UK's most prominent example of bespoke drone procurement failure; its replacement via competitive tender is a deliberate policy correction that will define UK tactical UAV procurement for the next decade.