The Metropolitan Railway (or Met. for short) has a fascinating history that books have been written about. More normally associated with the more traditional underground lines the company also expanded deep into Buckinghamshire with its northern extension terminating in the village of Brill just south of Bicester. Their signal boxes were of a very distinctive design being almost square, with this one at Wendover being their standard size at approximately seventeen by twelve feet. They usually came with the three window bays on the ends and front and came with the differently orrientated timber strip work to the panels that mirrored the windows. They certainly are a delightful design and very different to some of the austere designs that emerged over the years, for example at Kettering Junction, see....
https://www.ontheupfast.com/p/21936chg/29663552604/kettering-junction-signal-box Wendover box opened in 1889 and closed in 1984 with control moving to the newly constructed Marylebone control box. It's a shame in this photograph that the high tension wire pylons in the immediate background spoil the scene somewhat. These particular monstrosities start their march through the Chilterns at Uxbridge (West London) and end up at a large substation deep in the countryside south-west of Winslow.