Benefit of a 1-year MSc in Comp Sci in the UK I hope this is the appropriate stacksite to ask this question.

I have a BSc in Computer Software Development and would very much like to study another year for an MSc in Computer Science. I had the choice of an MEng but decided to take the separate MSc.

I've heard mixed opinions on the subject but considering the climate I personally think it would be a good idea to gain a post-graduate degree. I've heard from Master students who were able to open many more opportunities from gaining an MSc - such as successfully entering the Game Industry which I know is very competitive. Although I'm not one for Game related modules, I chose more software engineering, database, and programming modules instead of rendering and games design modules throughout my BSc.

I will be getting into a considerable amount of additional debt to fund this year, but I feel like I'd be much more employable so the debt wouldn't really be a problem.

What do you think? Any advice or input would be greatly appreciated. I am 23 and an Englishman, just to put things into perspective.
You didn't mention if you want to do an MS in the UK or the US. If the former, I have no experience of how it works over there. 

In general, an MS in CS does improve your chances of getting a decent job, but a lot depends on where you're getting an MS. In the US, the masters program is often viewed as a way to generate revenue via tuition, so your main benefit from the program is if it's very good at placing students. Obviously an MS from a place like Stanford or Berkeley will help you immensely because of the proximity of many tech options. But if you don't go to a place that has a good track record with placement, then the degree itself, while opening some doors, will not have provided you with maximum benefit for the price you're paying. 

Also, make sure you go to a place that has strong ties to industry in the areas you're interested in. Since you mentioned games, many universities (including mine!) have specialized MS programs in game design (and we have fairly strong ties to local industry in the game world). That might be too specialized for you, but you get the general drift