Based on an 'urban canyon' of 2 sidings surrounded by structures in the SW corner of the long-gone GWR Signal Works just to the north of Reading station, this micro layout measures just 110cm x 27cm (with a 45cm plug-in 'fiddle stick'). The prototype plan was modified by adding a single slip to create an 'Inglenook' shunting puzzle of 3 sidings with 6 wagon capacity on the back road and 4 each on the middle and front roads.
 
Baseboard is a 110cm Ikea 'LACK' shelf, found in my local Ikea's bargain bin for a mere £4, with a 5mm ply fascia/backscene and the layout intended for table-top use. Power is entirely self-contained with a simple DIY battery hand-held controller and a separate battery pack for the LED strip lighting.
 
Trackwork is Peco Code 75 OO/H0, with the 'paving' from layers of card of varying thickness to represent concrete with inlaid track.
 
Structures are a mix of kit built, kit-bodged and scratchbuilt, all kept deliberately anonymous to allow the occasional running of US or East German H0 stock in place of the usual BR 1980s OO stock.
 
The layout is very lightweight and portable, allowing travel via public transport with the layout on one hand and the stock, controller, etc in a small backpack!
 
The 'inspiration' photo from the Leightonlogs website: http://www.leightonlogs.org/Locals140810.htm