In response to clamzy - I did actually go on to solve this mostly on my own and the "bring in the hint givers" was a bit premature on my part. In my defence I'd looked at 4154 for about an hour, say, by then, with not much progress. Then, as often happens when you hit a wall and walk beside it for a while, you find a gap, cross it and make rapid progress then on to the next wall.
I worked through this puzzle in such gluts, starting with recognising the anagrams in three or four clues (but not yet solving them because the words were new to me), and then breaking into 3d, 26a, 14a... top half mostly done that evening over about 4 hours, and then another wall. Bottom half over by the end of the day, save for 39a.
Time was when I collected all the TImes crosswords over a period of a couple of months, and working backwards from solution to clue I got the hang of it then went forwards again until I could solve them properly. It was a good feeling completing my first! Since then I dropped away from the Times (not enough time, ironically...) but picked it back up again. Attempting listeners because I'm getting bored of skipping over them!
Incidentally, how can you join the Friday club when I only get the Listener in the Saturday Times?