| 1 | A | B | C | D | E | F |
| --- | --- | --- | --- | --- | --- | --- |
| 2 | United Kingdom railway station categories - Categorisation scheme |  |  |  |  |  |
| 3 | Category | Category | Number (2011) | Description | Trips per annum | Examples |
| 4 | A | A | 28 | National hub | over 2 million | Birmingham New Street, London King's Cross |
| 5 | B | B | 67 | Regional interchange | over 2 million | Clapham Junction, Preston |
| 6 | C | C1 | 248 | Important feeder | 0.5–2 million | Grantham, Plymouth |
| 7 | C | C2 | 248 | Important feeder | 0.5–2 million | Burgess Hill, Tamworth |
| 8 | D | D | 298 | Medium staffed | 0.25–0.5 million | Abergavenny, Penrith |
| 9 | E | E | 679 | Small staffed | under 0.25 million | Boston, Oakham |
| 10 | F | F1 | 1,200 | Small unstaffed | under 0.25 million | Beccles, Bishop Auckland |
| 11 | F | F2 | 1,200 | Small unstaffed | under 0.25 million | Llanfairpwllgwyngyll, Winchelsea |
| 12 | Total | Total | 2,520 | - | - | - |

Question: How many overall railway stations are there in Great Britain, how many categories are they classified into, and how many categories have subcategories?
Answer: The 2,520 railway stations in Great Britain are classified into six categories (two of which are each divided into two subcategories).