We all know London is changing, with major transport projects and skyscrapers set to dominate the agenda over the next few years.

But what about after that, well beyond the 2020s - how will London be different 100 years from now?

That question was put to a panel of experts who were asked to list the architectural and engineering developments they think the capital could see in the next century.

Their ideas, influenced by factors such as environmental conditions, increasing population and advances in technology and science, were then put to a pool of 2,000 British adults who were asked to choose the predictions they thought most likely to happen.

The top 10 is below – they look crazy but even if it just one or two of them came true the architectural landscape of London will change beyond all recognition.

Top 10 most likely architectural advancements for London in the next 100 years:

1. Super deep basements - The idea of multi-layered basement extensions is already beginning to materialise, and it is predicted future homes will have as many floors below ground as they do above.

This Is Local London:

How a deep basement could look under the Houses of Parliament. Six levels of living and functional spaces including gardens, parks, swimming pools, gyms, hotels, a football pitch and a secure bunker.

2. Floating sea cities that can harness solar and tidal energy.

This Is Local London:

What a floating city could look like. The reef-like structure formed on the water includes inter-linking pods for living space, while the use of glass and bone structures reflect sea-life and help to sit the floating city into the environment.

3. High-rise or rooftop farms where crops and animals are kept in tall, layered structures that combat space shortages.

This Is Local London:

Animals graze on pastures on top of high-rise London buildings with familiar landmarks in the background. 

4. 3D printed homes that can be bought ‘off the shelf’.

5. Buildings with their own micro climates buildings allowing people to live in previously uninhabitable areas.

6. Huge bridges that span entire cities.

7. Spaceports with easy access to the Moon or Mars.

8. Super high buildings – cities in the sky.

9. Underwater cities.

10. Collapsible / stackable living pods.

The research was carried out for new TV series Impossible Engineering that premieres on the Yesterday channel at 9pm on Tuesdays.