The depths of similar spec TVs that have been around for a comparable time to this television range from 25mm to 100mm. With a depth of 79.4 millimeters, the 49LH604 has a quite thick depth compared to most of the other medium display diagonal TVs that were launched around the same time as this TV.
Alternative 79.4mm thick televisions currently available which you might want to consider include the LG 43LH604 (£300) which is cheaper.
TVs with a thicker depth that might be worth looking at include the 40PFH4101 (£325.58) (79mm and cheaper), or the 40PFH4201 (£325.39) (79mm and cheaper) both from Philips.
What does "depth" mean?