Thanks again everybody for all the kind comments!
It's an Aquaone 620T doresy, although it doesn't have canopy filtration - I got rid of it and added a TetraTec EX700. So far it's doing a grand job, and runs as quiet as a mouse. It's definately a 130L jake, I had to lug thirteen 10L buckets from the kitchen to the lounge!

The photo is deceptive, the tank in nearly the full depth of the sofa next to it.
Thanks for the advice Dave. I've already trimmed the grass-like plants on the right hand side - they were trailing right over the top and starting to grow down the left hand side of the tank! I was wondering whether the stems could be trimmed on the others - I was worried about taking the growth bud out. The little clump to the left is
Lysimachia nummularia aurae [sp?] or Creeping Jenny, which the guy at the lfs assured me was an aquatic plant - I'm more familiar with it in hanging baskets! I have no idea what the plants in the middle are if anyone would care to take a guess, and a name for the grass-like ones to the right would be useful too
It's funny you should mention the wood. I was in two minds about what to do with it, but decided I quite like it on top of the gravel, almost as if it has washed in from upstream and come to rest. I don't know, maybe that's a bit fanciful but I'm happy with it.
Cheers.