Bank, or more strictly Bank/Monument, has 15 different entrances.
This is the first entrance at Bank, on the corner of Prince's Street.
The second entrance is on the corner of the Bank of England.
The third opens up alongside Threadneedle Street, facing the Royal Exchange.
The fourth is in similar style, alongside Cornhill, but is currently closed.
Entrance five is this narrow affair at the top of Lombard Street.
Entrance six is slightly further down, and boasts this magnificent roundel.
The seventh entrance is unsigned, and tucked up the side of the Mansion House.
As for number eight, this is located where Queen Victoria Street meets Walbrook.
Number nine leads in directly from 1 Poultry, or down a set of modern steps.
Another relatively recent addition is the DLR lift entrance on King William Street.
Heading now to Monument, one entrance can be found on the corner with Cannon Street.
This pair at Monument includes a special basement level entrance into House of Fraser.
Across the road junction, on Eastcheap, another pair of staircases descend.
Behind one of the staircases is a fourteenth entrance down into the station.
Finally there's this entrance on Fish Street Hill, facing the Monument.
That's fifteen entrances in total, and with two more on their way... a) the new Walbrook entrance for the Waterloo & City line, due next year. b) a new entrance facing Cannon Street, maybe five years off.
Second on the Most Entrances list is Charing Cross. Like Bank/Monument, it's really two stations bolted together.
Charing Cross has 14 entrances: Charing Cross concourse (3), Strand (3), Trafalgar Square (3), Strand/Duncannon Street, Strand/Villers Street, Villiers Street, Adelaide Street, William IV Street
And third is a 'proper' station, Marble Arch, which has a large subway attached.
Marble Arch has 12 entrances: Oxford Street, Park Lane east side (3), Park Lane west side (2), Park Lane centre island, Marble Arch island (2), Underground car park (2), Speakers Corner
Here's the full Top 10:
1) Bank/Monument (15) 2) Charing Cross (14) 3) Marble Arch (12) 4=) Gants Hill (9) 4=) Old Street (9) 6) Oxford Circus (8) 7=) Liverpool Street (7) 7=) Manor House (7) 7=) Piccadilly Circus (7) 7=) Westminster (7)
n.b. King's Cross St Pancras ought to be near the top, with (I think) 13 entrances, but it was "Under re-construction" when the database was put together.
At the other end of the scale, roughly half of tube stations have only one entrance.
(according to TfL's definition of an entrance and an out-of-date, incomplete list, that is)