Sellafield, Seascale Data via plota.co.uk

4/25/2410/0F1 Approved

Proposal

Prior notification of proposed demolition – the computer accommodation building Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
5 Dec 2025
✓
Approved
4 Feb 2026

Approved on 4 Feb 2026 · Last checked 2 Oct 2026

Site constraints 2

Habitat network: Network Expansion Zone
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Inside the Sellafield built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

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Important details

Council
Copeland
Received
5 Dec 2025
Validated
5 Dec 2025
Parish
Ponsonby
Case officer
Show
Decision
APPROVE
Decision date
4 Feb 2026
Applicant
Show

How this decision compares

Decided in 61 days from validation, 24 days slower than Copeland's median of 37 for prior approvals. Approved, as 100% of prior approvals here are.

86%decided within 8 weeks
100%approved
28decided in the last year

Plota live figures for prior approvals decided by Copeland in the last twelve months, from validation. Copeland decision record →

Cumberland
Planning Authority Score
4.9/10
Below average
#151 of 296 councils
Relevant to this application:
Householder decisions

Cumberland is slower than most councils at deciding householder applications, ranking #239 out of 296. Householder applications are more likely to be approved here than most councils, with a 97% approval rate vs 90% nationally.

More permissive than most councils
97% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Cumberland decision statistics
Based on MHCLG data, the year to March 2026
96%
Overall approval rate
Above avg (87%) #9 of 296
97%
Householder approved
Above avg (90%) #30 of 296
50%
Decided in 8 weeks
Below avg (63%) #239 of 296
45%
Extended time limit
Above avg (41%) #189 of 296
87%
Minor dwellings approved
128 decided (1-9 homes)
91%
Major dwellings approved
23 decided (10+ homes)
95%
Change of use approved
108 decided
1,169
Total decisions
49 refused in the year to March 2026