1.0markwilson.ithttps://www.markwilson.co.uk/blogrich600338<blockquote class="wp-embedded-content" data-secret="41ZGfFpqh2"><a href="https://www.markwilson.co.uk/blog/contact/guest-contributors">Guest contributors</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.markwilson.co.uk/blog/contact/guest-contributors/embed#?secret=41ZGfFpqh2" width="600" height="338" title="“Guest contributors” — markwilson.it" data-secret="41ZGfFpqh2" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.markwilson.co.uk/blog/wp-includes/js/wp-embed.min.js /* ]]> */ </script> Writing posts for this blog is a time-consuming exercise and occasionally the site has featured guest posts from some of Mark’s most trusted colleagues. Please do not contact me asking me to feature your content on this site. Garry Martin Over the last 25 years, Garry has worked with some of the world’s most influential … Continue reading