Clutch Slipping?

I have a feeling my clutch may be knackered. For a while I have had an occassional issue with getting reverse for example. Nothing serious but you might have to look for it a few times.
I'm noticing now that whilst driving if i'm just rolling behind someone in traffic say and I get some free road and floor it. I can hear plenty of engine noise but get limited drive for a few seconds.
Now I'm guessing that it's not a throttle, fuel or engine problem which leaves me with the clutch. Worn plate or something?
Anyone any ideas? Do I have a busy Christmas ahead?
I'm noticing now that whilst driving if i'm just rolling behind someone in traffic say and I get some free road and floor it. I can hear plenty of engine noise but get limited drive for a few seconds.
Now I'm guessing that it's not a throttle, fuel or engine problem which leaves me with the clutch. Worn plate or something?
Anyone any ideas? Do I have a busy Christmas ahead?