I dug my heels in after being told about normal boosts and the agent went away and, eventually, divulged the following.......
w/e 13-15th November channels 307 and 308 (Comedy) are 'open'
w/e 20-22nd November channels 483, 484 amd 485 (Nickeloeon) are 'open''
w/e 27-29th November channels 306, 309, 537, 538, 539, 540 and 541 (Music) are 'open'
So, nothing to get excited about sadly! :-)