From in-the-sky.org's Planetarium function for London on said date and time, we can see that Orion's belt is about 17° above the horizon in the west-south-west.
@Greg Miller's comment is close:
But I'll propose a correction, that's a very nice photo of Orion :-)
To prove that, see my snapshot of Orion et al. in this answer to What's the orange star I can see in the sky right now?
The three stars in a row just beloiw the antenna are Orion's Belt and the "straight line" dropping down and slightly to the left from it is Orion's sword.
And the slightly fuzzy blob in the sword is the Orion Nebula