List of tallest buildings in the United Kingdom Tallest under-construction buildings Tallest under-construction buildings

| Rank_ | Name_ | City | Region | Height_m | Height_ft | Floors | Estimated_Completion |
|---|---|---|---|---|---|---|---|
| 1 | Leadenhall Building | London | Greater London | 225 | 737 | 48 | 2014 |
| 2 | 52-54 Lime Street | London | Greater London | 190 | 623 | 38 | 2017 |
| 3 | 100 Bishopsgate | London | Greater London | 172 | 564 | 40 | 2015 |
| 4 | 1 Blackfriars | London | Greater London | 163 | 535 | 52 | 2018 |
| 5 | 20 Fenchurch Street | London | Greater London | 160 | 525 | 36 | 2014 |
| 6 | Baltimore Tower | London | Greater London | 150 | 495 | 45 | 2016 |
| 7 | Providence Tower | London | Greater London | 136 | 446 | 44 | 2015 |
| 8 | One The Elephant | London | Greater London | 133 | 436 | 37 | 2016 |
| 9 | 25 Churchill Place | London | Greater London | 130 | 427 | 23 | 2014 |