Unusual bird on my bird table.

[Toastiness]

Isn't it some type of kite?

Common Kestrel from the photo.

[RasputinDude]

Not a kite.

I'd go for sparrowhawk.
Good image here Rufous-breasted Sparrowhawk (Accipiter rufiventris) » Planet of Birds

[cojak]

[DimPrawn]

Unusual bird on my dining room table.

[Toastiness]

And this one is a female Sparrowhawk...

[cojak]

And this one is a female Sparrowhawk...

It likes pigeons too...

[Old Hack]

Common Kestrel from the photo.

I'd go with this too.

[Toastiness]

I'd go with this too.

Probably more likely to see a Sparrowhawk than a Kestrel hunting for birds in gardens, and a male sparrowhawk (smaller than female) can resemble a Kestrel.
Easiest way to distinguish them without photographic evidence is the eye colour.
Yellow iris -> Sparrowhawk
All Black -> Kestrel

[cojak]

Probably more likely to see a Sparrowhawk than a Kestrel hunting for birds in gardens, and a male sparrowhawk (smaller than female) can resemble a Kestrel.
Easiest way to distinguish them without photographic evidence is the eye colour.
Yellow iris -> Sparrowhawk
All Black -> Kestrel

As both photos demonstrate. Thanks Toastiness

[Old Hack]

Kestrel has yellow eye lids doesn't it?

I live in Rural Somerset and we get them all in the garden, including once, a mahoosive great big buzzard picking something out of the paddock.

Just to add, I can see Cojaks one is a Sparrowhawk, but that the one in the OP looks like a Kestrel to me.