Using PhantomJS to check if F1 is available to watch or not.

f1-cherker.js

(function () {
  'use strict';
  var page;
  page = require('webpage').create();

  page.onResourceRequested = function(requestData, request) {
    if ((/http:\/\/.+?\.(css|png|js|jpg|gif)/gi).test(requestData['url']) || requestData['Content-Type'] == 'text/css') {
      request.abort();
    }
  };

  page.onError = function () {
  };

  function check() {
    console.log('['+new Date().toISOString() + '] Checking');
    page.open('http://www.bbc.co.uk/programmes/b03yrh8r', function () {
      // page.open('http://www.bbc.co.uk/programmes/b03yms67', function () {
      var isAvailable = page.evaluate(function () {
        return document.querySelector('.availability .message .text') === null; 
      });
      if(isAvailable) {
        console.log('['+new Date().toISOString() + '] Available!');
        phantom.exit();
      } else {
        setTimeout(function(){
          phantom.exit();
        },1000);
      }
    });

  }
  check();
}).call(this);