RobK - 1 hour ago »
There are two circumstances in which I have witnessed this same issue. The first is as discussed above where I have opened the programme information for a channel, but due to the timing between programmes it is not available to 'Watch Live', this is purely a timing information as the guide switches between which programme it believes is currently live. The second circumstance may be of more help to you, it occurs when you have used pause or rewind on your current channel before opening the guide. The box 'protects' your current position in the buffer by preventing you from changing channel through the guide. Simply exit the guide, press the stop button to return to live TV and you should then find the 'Watch Live' option returns in the guide.
At last! An explanation of why I get CLOSE instead of WATCH especially the second circumstance as the first circumstance did not apply in both cases that I reported earlier.
Many thanks to you RobK.