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a) Firme per Regione. Valore assoluto e % dell'ultimo corpo elettorale (2017)
| Regioni | Firme | Elettori | Sign/el |
| East Midlands | 266.806 | 3.415.899 | 7,81% |
| London | 1.026.508 | 5.459.427 | 18,80% |
| North East | 132.135 | 1.938.346 | 6,82% |
| North West | 448.666 | 5.302.587 | 8,46% |
| Northern Ireland | 109.595 | 1.242.698 | 8,82% |
| Scotland | 489.585 | 3.988.441 | 12,28% |
| South East | 826.383 | 6.507.917 | 12,70% |
| South West | 494.645 | 4.181.098 | 11,83% |
| Wales | 197.789 | 2.298.161 | 8,61% |
| West Midlands | 288.738 | 4.132.560 | 6,99% |
| Yorkshire and The Humber | 298.553 | 3.926.703 | 7,60% |
| East of England | 445.035 | 4.432.644 | 10,04% |
| Totale UK | 5.024.438 | 46.826.481 | 10,73% |