To promote the hobby of Railway Modelling in general.

To bring together individuals, interested in Railway Modelling for their mutual benefit and enjoyment of the hobby.

To encourage and nurture modellers whatever their age, level of expertise or experience by providing practical support and expert tuition, as appropriate, in all aspects of the hobby.

To construct a permanent 'club' layout on which members may work, practice their skills and run their own stock.

To construct jointly owned layouts and to attend model railway exhibitions organised by other clubs throughout the country.

Three Counties Model Railway Society, (Formerly Mentmore Model Railway Group) is based near Aston Abbotts, approximately mid way between Aylesbury in Buckinghasmshire and Leighton Buzzard in Bedfordshire, and was founded in early 1998 by two local, Leighton Buzzard, residents and London commuters  Peter Boyde and Chris Meredith, who discovered their mutual interest in model railways whilst waiting for their early morning train.

Early in 2002, the two founder members were joined by a third, Austin Marshall, following which, a decision was taken to hold meetings on a more formal basis.   Work continued apace on Chris's loft layout but it soon became clear that a loft was not the ideal place to hold meetings due to the marked and rapid variations in temperature.   In addition more space was urgently needed in which to work on other projects, so another new member,Ron Harvey,  offered the group the use of his double garage.

With an area available of approximately 55' x 10', the Group was able to start planning and construction of its first continuous run layout.   This was in 00 (4mm Scale) and based on L.M.S. & early B.R. practices although other region's locos did feature regularly.   All the trackwork had been completed and work continued on the buildings and scenery although there is still much to do before the layout is complete, if one ever is?

A further member, John Page joined the Group in November 2006 and was able to continue working on his latest exhibition layout.   At the same time it was also unanimously decided, to increase the number of members, if possible, by raising the profile of the Group and holding meetings on a weekly, rather than a fortnightly basis, as had previously been the case.