BENNET, Redbourn, SOMERS, Buckland, circa 1900
Crown, Redbourn - John Walker, 1882, 1886, 1890. Not listed 1912
White Horse, Buckland - Not listed 1882, 1886, John Somers 1890. Not listed 1912
A quick check in the book Redbourn's History reveals that the Crown was one of 19 on the main road through the town, presumably catering for passing traffic in the days before the railways took much of the traffic away. It gave its name to Crown Street and the first reference to it is 1771. The last reference they have recorded is 1889 (which may be the 1890 Kelly's directory entry) while the birth certificate you have suggests that it was still open in 1897. It may be that some of the St Albans street directories in the St Albans Central Library may cover Redbourn from about 1900 - but I am not certain.
The 1881 census shows John Walker as a Plumber & Licensed Victualler living with his family in the High Street, Redbourn. The 1851 census shows a John Pedder, harness maker and victuller was in The Crown. These suggest that, at least since the end of the passing coaching trade, running the Crown was not a full-time commitment. Perhaps when Thomas Luke Bennet was there he also had a second business - and this may be listed in the 1898 or 1902 Kelly's Hertfordshire Directories - to which I do not have ready access (but I think there are copies at HALS).
If you can add to the information given above tell me.