My local Tesco doesn't stock anything other than PS3/360/PC (well... World of Warcraft and Sims). No Wii, Wii U or 3DS either.
But yeah, the lack of "presence" is a bit concerning really. I thought Sony might have looked at having a bit of a push with Rayman Legends and KillZone both coming out and a few other games being due over the next few weeks too. As it is even Grainger Games look to be having a bit of a clear out, they have more Pre owned PSP stock than they do Vita games on the shelf at the moment, and have made the bottom half of the rack a "Sims" section.