Ryan air operate cheap flights from Stansted to Tours (the nearest airport) and Limoges. Flybe offer flights from Southampton to Limoges.
The cheapest ferries are from Dover to Calais. The nearest ferry port is Caen
By Euro Tunnel
The euro tunnel is the quickest channel crossing and at non peak times is as cheap as the ferries.
From Calais via Rouen – A16 south to Abbeville – A28 to Rouen – A13 jnc.19 N154 through Evreux – follow signs for Dreux then Chartres – N154 to A10 to Orleans – A71 direction Vierzon. A85 to Romorantin – D922 Villefranche – Turn right on to N76 – left on to D128 Gievres and then Chabris. Through Chabris and at the roundabout D25 dir. Parpecay. At the end of a long wall turn right into Menetou sur Nahon (D52). Go through the village – follow sign to Varennes-sur Fouzon. At the village exit sign turn right s/p Les Isserteaux, La Touche. Les Amis is the first house on the right.
The Michelin local map that covers the area scale 1/150 000 is map 323 LOCAL. Cher, Indre. The map to the west is 317 LOCAL Indre et Loire, Maine et Loire and includes Tours; and to the north 318 which covers Orleans. In the National series no 724 covers Northern half of France. In the regional series Map 518 covers the area of Centre. The IGN series is large and the best for local areas being on a scale of 1/25 000 serie bleue – carte de randonnee. The 2 most useful are 2123 E Chabris and 2123 O Selles sur Cher