Gill Sans is a sans-serif typeface designed by Eric Gill and released by the British branch of Monotype from 1928 onwards. Gill Sans takes inspiration from the calligrapher and lettering artist Edward Johnston’s 1916 “Underground Alphabet”, the corporate font of London Underground, now (although not at the time) most often simply called the “Johnston” typeface.
Gill was commissioned to develop his design into a full metal type family by Stanley Morison, an influential Monotype executive and historian of printing. Gill Sans was released in 1928 by Monotype, initially as a set of titling capitals that was quickly followed by a lower-case.
The proportions of Gill Sans stem from monumental Roman capitals in the upper case, and traditional “old-style” serif letters in the lower. This gives Gill Sans a very different style of design to geometric sans-serifs like Futura, based on simple squares and circles, or realist or grotesque designs like Akzidenz-Grotesk, Helvetica and Univers.
Gill Sans is as commercial font family a highly successful and popular typeface. There are number of free alternative fonts of Gill Sans can be found in Google fonts foundry and other sources. The very closest font is found Sans-Guilt which provides the versions of Gill Sans based on three different sources.
Sans Guilt MB: Based on a rasterized pdf made with the Monotype Gill Sans delivered with Mac OSX. Sans Guilt DB: Based on early sketches by Eric Gill. Sans Guilt LB: Based on lead type from Royal College of Arts letterpress workshop.
In addition you can find some closest alternative fonts of Gill Sans at following sources including Google fonts.
If you get the alternative fonts useful and workable like Gill Sans then you can use in any purpose regarding personal and commercial use.