First, a quick demo of the zoom on the camera. Here is a pontoon in Greenland Dock with no zoom.

And here is the same shot from the same vantage point at maximum zoom (10x optical and 4x digital).

Next, photos of species I've already counted.
To make

A blue tit, with no doubt this time.

Tufted ducks, showing off their tufts.

A blackbird (juvenile male, I think).

A great spotted woodpecker (there were actually a pair of them).

And a great spotted woodpecker in flight.

A male great crested grebe showing off his colours (but no crest at this time of year).

And a pair of great crested grebes (with some digital zoom, so the full-size version is pretty blocky).

Now the new ones.
Here's a goldfinch, which I actually thought was a sparrow when I snapped it -- the camera has much better eyesight than I do.

A starling.

Coal tit.

Great tit.

Juvenile lesser black-backed gull (I think).

Greylag goose.

I also saw, but failed to photograph, a fox. So my score now is 29 birds (all photographed except for robin) and 2 mammals.