Revised plans submitted to Lancaster City Council scale down the ambition after cost inflation delayed the start of the programme originally slated to complete in 2024.

The new designs centre around architect Grimshaw’s ‘colony of shells’ concept, retaining only two domes — the Realm of the Sun and the Realm of the Moon — linked by the Metronome arrival hall.

Total internal space has dropped from 185,000 sq ft to 91,500 sq ft, the height of the main dome is lowered by 4m to 37.3 while the opening is now set for late-2028.

The cutback in built space means external landscaping will be expanded across the 11-acre site with two enlarged outdoor gardens, Rhythm and All Seasons, creating more open-air event space and performance areas.

Predicted visitor numbers have been slashed from 1m to 585,000 a year reducing the level of transport infrastructure work needed.

Eden Project North originally secured £50m of public funding to transform a derelict seafront site in Morecambe into a world-class visitor attraction.

The scheme remains without a construction partner, though LK Group has carried out site investigation works on the bayfront plot.