It was NOT delivering to Tesco, neither was it parked aimlessly, as i already said; it was reversed partly through the Studio's entrance just meters from the BB house garden.
It didn't have a freezer or cooler thing on the top, and no it wasn't a huge delivery lorry, it was more like a medium courier lorry.
Anyone who has been to an eviction will know that it would be pretty pointless delivering to other productions/stages at the studios from this location because from here there is no further wide access, and there is just the BB garden, small BBBM and BBLB studio, and further on the car park.
There is a dedicated deliveries entrance at the front of the studios, where there is also a wide passage road which runs directly past each of the other stages, but access to the BB house from the front is restricted, therefore most, if not all of the BB deliveries are highly likely made through the back gate of the studios.
I've labled the back entrance where this lorry was. You can also see the Tesco delivery road running back past the rear of the store going toward the top left of the image. So a lorry reversed partly into the studios - i doubt-is delivering to tesco
The gate is usually shut anyway