I'm a long term lurker first time poster!

I've just had my lovely Signum (Metallic Black, 53 reg, 2.2DTI) for a year and it passed it's MOT with no issues yesterday!

This afternoon when I came to drive away from work it started fine but I could not select 1st, 3rd or 5th (which was a tad inconvenient).

Having driven home (using 2nd and 4th) I had a look under the gear leaver gator and couldn't tell much...

I'm pretty stuck till I can take it to a Transmission place I've used before, any ideas or comments!?

Thanks in advance..