Source of precast concrete footings in UK?

[Rusted]

Hi,

Precast concrete footings are readily available in many countries.
The usual source is builder's merchants and DIY superstore chains.
However, I can't seems to find them in a UK online search.
Has anybody seen these on their travels?

Thanks

[Swoop1]

Concrete Foundation Post from Tuin

Found these. Are they what you are looking for?

[Rusted]

2 hours ago, Swoop1 said:

Concrete Foundation Post from Tuin

Found these. Are they what you are looking for?

Exactly! 
Except they are very much cheaper "abroad."
About £18 in Denmark. 25x25cm base x 50cm high.

Thanks for responding.