Reddit mentions of Asus Internal Blu-Ray Combo (12x BD-R (DL), 16x DVD+/-R, BDXL - 90DD0230-B20010 - Black

Your google-fu is weak;
http://www.amazon.co.uk/dp/B00D3IKKVA/ref=asc_df_B00D3IKKVA18250740?smid=A5Y5ZDGV1AKXL&tag=pricerunner-ce-3p-21&linkCode=df0&creative=22242&creativeASIN=B00D3IKKVA&ascsubtag=uk,27816,SEO,35,google;f0120409ba673673d3b6c8cdf09c7ccf

For reference, I paid 115$ for mine, and at 79 pounds the conversion rate is equal to about 133$.

You said you were planning on overclocking in another reply of yours, if that's the case I recommend the i5 4670k (Pretty sure you said you added it to your parts list in the other reply). If that's the case, I would recommend either the NZXT Kraken X40; http://www.amazon.co.uk/NZXT-Technologies-Premium-Performance-RL-KRX40-01/dp/B00ANJRTYS (98£) if you want to use a closed loop CPU cooler (you'll need a case that has 140mm fan mounts for the X40, but other CLC's use 120mm fans which makes them quite a bit louder, so it's a fair trade-off)

Or, the Noctua NH-D14; http://www.amazon.co.uk/NH-D14-Processor-LGA1366-LGA1156-LGA1155/dp/B002VKVZ1A (66£) if you want to go the air-cooling route. The NH-D14 comes with two 140mm fans and has mounts for 120mm and 140mm fans should you decide to change them out; personally, I wouldn't recommend doing that, since the two fans that come with it are some of the best 140mm PWM fans on the market, and because they too will be quieter in operation than their 120mm alternatives.

In reality, an NH-D14 will be fine for overclocking. It may max out at 95c in synthetic benchmarks, but in reality, you could game in the high 70's/low 80's, depending on ambient temperature, at 4.2-4.4Ghz, depending on how your chip performs. As long as the core voltage isn't over 1.25, you'll be fine. If you want something with a little bit better temperatures, or with more headroom to overclock, the NZXT Kraken X40 is the way to go.

It all depends on how much you want to spend, but the cheapest overclocking setup I could recommend to you, with the Asrock H87 Fatal1ty motherboard, i5-4670k, and NH-D14, buying all of these components off of Amazon, (Link for the i5 4670k; http://www.amazon.co.uk/Intel-Graphics-BX80646I74770-Generation-Technology/dp/B00CO8TBOW (167£) would be an extra 125£ cost for your budget, bringing your total to 685£. Not to mention you'd need a higher-wattage PSU, something in the 700-750 watt range, like the Seasonic X-750 Fully Modular PSU; http://www.amazon.co.uk/Seasonic-X-750-module-ATX12V-Supply/dp/B002VAFDQS/ref=sr_1_1?s=computers&ie=UTF8&qid=1397013585&sr=1-1&keywords=SeaSonic+SS-750KM3 (140£)

So, to build an overclocking system, with solid, name brand, quality components all the way around, it'd cost you 230£ extra, bringing your total cost to 790£, or 1325$ american. And that's if you get the NH-D14. With the NZXT Kraken X40, with another fan on it along with the fan it comes with, would be 840£, or 1400$ american. Without the extra fan it'd be 820£; 1375$

And with the PCI wireless card it'd be 855£; add a blu-ray combo drive and a 770 instead of a 760, and it's 950£

Or, you could just get the i5 4670, the fastest locked quad-core i5 at 3.4Ghz, for 158£, which with the PCI adapter would bring your build total to 595£, or just under one thousand dollars american. With the Blu-ray drive also it'd run you about 645£, bringing your grand total to 1080$ american.

The reason I spent the last two hours reading reviews, looking up links, and sorting through statistics, is because I wanted to show that overclocking is not cheap. You'd be paying another 320$ american, or 192£, for another 10-20% performance. I'm not saying don't do it, I'm just trying to illustrate the true cost associated with it. Not to mention that for the NH-D14 or the NZXT x40, you'd need to move up to a full-size case, which would add further to the cost. My point is, that if you're new to this and just want a capable gaming machine for 1080p, you'd be much better off just getting the 4670, wireless card, and blu-ray combo drive; http://www.amazon.co.uk/Asus-BC-12D2HT-Blu-ray-Combo-Drive/dp/B00F0SQL6O/ref=sr_1_6?s=computers&ie=UTF8&qid=1397014362&sr=1-6 (50£).

If this is something that really interests you, that you know you're going to invest a lot of hours in and not get bored of, then go ahead and pull the trigger on the overclocking build. If you do, it'd be worth it to save up enough to get a 770 instead of a 760, since it's about 10-20% ahead of the 760, performance wise. Your total cost would be 950-1000£.

tl;dr If you want a nice rig, use the i5 4670, get the wireless card and blu-ray combo drive, and have fun. If you want to turn this into a hobby, and you're willing to spend time (and a whole lot more money) on it, then get the 4670k, AsRock Fatal1ty H87, NH-D14, Seasonic X-750, and 770. And the wireless card and Blu-ray combo drive.

I hope I've fully illustrated the pros and cons of overclocking. It's not for everyone, and to be totally honest it can be the motherfucking-est pain in the ass at times (from mounting big-ass heavy heatsinks and spending hours researching technical details, and ultimately developing a huge knowledge and understanding of the subject that you can't talk about with anyone besides people on the internet) but in all honesty, I love it. You might too. I just wanted to be totally honest and up-front about the extra cost and difficulties, because it's totally fine if it's not something you'd want to get into.