Holwell can be accessed directly using the Hitchin 89 Centrebus service.

89 bus timetable

The possible bus stop locations in Holwell are:

The village also can be accessed using the 71 Stagecoach service or the 188 and 190 Centrebus service. Please note that these buses however stop at Holwell Turn (on the A600 road) instead of in the village itself:
71 bus timetable
188 and 190 bus timetable

Bus stop, if travelling from Holwell to Hitchin:

Bus stop, if travelling from Hitchin to Holwell: