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Southsea Coastal Scheme

The largest local authority-led flood defence scheme in England, protecting around 10,000 homes and businesses. Rebuilding the seafront public realm as it goes, which is why it also appears in regeneration discussion.

ProposedApprovedUnder wayCompleted
Last evidenced stage
Under way as of 15 September 2026. Retained project review of 15 September 2026. Not published as a running total spent where published.
Who owns it
Coastal Partners / Portsmouth City Council
Next decision or milestone
Successive frontage phases through to completion
Funding
Not stated. See scheme site. Evidence: Published. Funder: Environment Agency flood defence grant in aid, with partnership funding.
Delivery vs outcome
Outcome evidence: A completed stage does not establish the size of the resulting benefit; no new outcome total is inferred. An open building or working installation is delivery evidence; use, emissions or effects are outcome evidence and are reported separately.
Where
Portsmouth South

A multi-frontage scheme needs a verified route overlay; Portsmouth South is a constituency, not a ward.

Dated records

  1. 2023-03-17 output Frontage 1 (Long Curtain Moat) officially opened. source ↗
  2. 2024-05 output Frontage 4 (Southsea Castle) opened. source ↗
  3. 2024-12-19 output Frontage 5 West (Pyramids to Speakers’ Corner) opened. source ↗
  4. 2026-04-02 output Frontage 3 (Southsea Common) opened. source ↗

Sources