All sponsors

Blacktrace Holdings Limited

ActiveTrading as unchainedlabs
RoystonProfessional ServicesListed under this name since 22 Oct 2021

Can sponsor visas

It is on the Home Office register of licensed sponsors. Not every job it advertises comes with sponsorship.

Visa routes
1
Skilled Worker
Rating
A
In good standing
Live jobs
0
On UK job boards

Licence & visa routes

Routes
Skilled Worker
Licence rating
Worker, A rating

A rating: in good standing. B rating: downgraded and must fix problems before sponsoring new workers.

Sponsored jobs

No jobs found yet

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Companies House changes

Run a live check
15 changes worth checking since it was listed on 22 Oct 2021Checked 1 Nov 2026
  1. Director resigned: PHELPS, Donald Charles12 Dec 2025

    Director change recorded on 12 Dec 2025. If this person was your Authorising Officer, Key Contact or Level 1 user, the change must be reported in the SMS (the Home Office sponsor system) within 20 working days.

  2. New director appointed: FREDERICK, Brandon12 Dec 2025

    Same rule as the director change above.

  3. New shares issued (allotment)12 Feb 2025

    Share capital filing recorded on 12 Feb 2025. No new majority owner was notified, so this is usually routine. If it did pass a controlling interest to someone new, the licence does not transfer automatically, and a new licence application may be needed within 20 working days.

Companies House doesn't show whether a change was reported to the Home Office, so check these against your own records.

Common questions about Blacktrace Holdings Limited

Is Blacktrace Holdings Limited a licensed UK visa sponsor?
Yes. Blacktrace Holdings Limited in Royston is on the Home Office register of licensed sponsors under this name since 2021. It can sponsor workers from overseas, but not every job it advertises comes with sponsorship.
What visa routes can Blacktrace Holdings Limited sponsor?
Blacktrace Holdings Limited is licensed for Skilled Worker. Its licence rating on the register is "Worker (A rating)".
Where is Blacktrace Holdings Limited based?
The register lists Blacktrace Holdings Limited at 1 Anglian Business Park, Orchard Road, Royston, England, SG8 5TW. This is usually the head office; the job itself may be somewhere else.
How current is this information?
This page uses the UK Home Office register of licensed sponsors, as published on 30 October 2026, and Companies House records for company number 04257809. We update it daily. Always confirm a licence status on GOV.UK.

Registration details

Company number
04257809
Legal name
UNCHAINED LABS ROYSTON LTD.
Address
1 Anglian Business Park, Orchard Road, Royston, England, SG8 5TW
Website
unchainedlabs.com
LinkedIn
Profile

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As of 30 October 2026, Blacktrace Holdings Limited (trading as unchainedlabs; Companies House 04257809; Royston) holds an A-rated Worker sponsor licence covering the Skilled Worker route and has appeared on the UK Home Office register of licensed sponsors since 22 October 2021 (source: Borderless, from the GOV.UK register of licensed sponsors and Companies House). The first register date is when we first saw it listed, not the official licence date. Text-only version