a "Belfast Flap" to restrict posting to letters only and a flanged shallow base suitable for installation in modern buildings, shopping centres and other urban areas. These boxes were thus much easier to move and handle as they could be rolled over level ground or lifted by crane into position. The design had one major flaw in the area of the door hinge, which is prone to snap under stress and the K type pillar boxes are no longer being installed. Until 2015, all new pillar boxes for use in the UK were Type A traditional pillars or Type C oval pillars from the foundry of Machan Engineering, Denny, Falkirk, Scotland. The foundry, which was dissolved in 2016, was the sole supplier of cast-ron pillar boxes to the Royal Mail since the 1980s and had seen orders dwindle to a single box a year. Exceptions to this are the Supermarket or "Inside" boxes supplied by Broadwater Mouldings Ltd of Eye, Suffolk and the sheet steel "Garage" boxes supplied directly by Romec Ltd. Scotland In Scotland there was controversy when the first boxes made in the reign of Elizabeth II were produced. These bore the cypher "E II R" but there were objections because Queen Elizabeth was the first Queen of Scotland and of the United Kingdom to bear that name, Elizabeth I having been Queen of England and Ireland only. After several E II R pillar boxes were blown up by improvised explosive devices, the General Post Office (as it was at that time) replaced them with ones which only bore the Crown of Scotland and no royal cypher. Red telephone boxes or kiosks of type K6 were also treated in the same way, so too GPO/Royal Mail lamp and Wall boxes. Olympic gold To mark the 2012 Summer Olympics, Royal Mail, Isle of Man Post and Guernsey Post painted a pillar box gold in the home town of each Great Britain team member who won a gold medal, as well as a demonstration model near Westminster Abbey. A website mapping the gold boxes was provided. The boxes, originally intended to be repainted to the traditional red in due course, will remain gold painted permanently. Black History Month In September 2020 four pillar boxes were painted black, with gold tops to mark Black History Month in October. They are located in London, Glasgow, Cardiff and Belfast. The London postbox, in