Alexander Dennis (ADL) will hold an open day for the general public at its Guildford chassis plant on Saturday 11 May between 1000-1700hrs.
A display of historic and modern coaches and buses, along with other historic Dennis products, will be staged.
A selection of vintage vehicles will offer trips for visitors, while modern buses will provide shuttle services to and from a dedicated parking location and Guildford and Woking railway stations.
Both the open day and the shuttle services will be free, but ADL will be raising funds for its charity partners Challengers and the Phyllis Tuckwell Hospice Care.
Further details of shuttle bus times and the offsite parking location can be found at www.alexander-dennis.com/openday/