Yeah I know >.< I've seen some of the papers for A-level maths. 

Any altenatives? 

If you can't do the maths, and you can't find a college which offers computing, you might be in trouble if you want to get into the game industry,

Most colleges let you change courses during the first term, so if you find yourself excessively struggling, you can change.

Remember you can just do an AS in maths, and forget the second year, that will limit your unis somewhat, but some will still accept (especially if you find a college doing computing).

Also, you can hire extra tuition if you need it.

The thing with maths is that it's not about whether you find it hard or easy, it's about whether you enjoy it. Even if you struggle, as long as you enjoy it, and maybe take on extra tuition, you should be fine.

How are you likely to do in Physics? That's a possible alternative to maths.

Well from what i understand about the gaming industry in the UK your best bet is not to rely on the degree program from what i was hearing devs have lost faith in the university courses due to an over generalisation of the courses if you do go to university i would suggest specialising in your own time and really focusing on one specific area of design. i'm coming into my final year as an art/animation student and starting to really build a portfolio up and looking at job openings and the feedback i'm getting is specialise!

(and as you can probably tell learn to spell :P)

good luck to you and i would suggest an AVCE (not sure what that is in btec relevant terms these days) in ICT it will teach you nothing you need to know but it's a good platform to get yourself into uni. and look at after college courses in 3DS max yea it takes time away from doing social things but it's worth it in the long run and should teach you a good logical workflow, the software knowlege will be vital later on.

If you want any advice from someone who's doing all thing them PM me i'd be happy to help

Predicted a B in science (Bio, chem, phy). But if I had to choose between Maths and Physics, it's gonna be maths. I just need to revise a lot. thanks

Aww i can kinda agree with you. im doing a few other things as well in the game design field. my goal is lead designer as well. 

We american univeristies too you know

Another option to consider is just not going into the game industry at all, or at least not having it as a primary life plan.

The game industry is incredibly competitive, which means that it doesn't pay as well as you might think (unless you're exceptional and climb the ladder). If it is not your passion (and I mean passion. 9-5. Monday-Friday. 48 weeks a year) the work load and low pay can get depressing fast.

You should really consider looking into other potential paths, and keeping the game design thing to a hobby-level. As you move through the education system, you will meet people with exceptional talent and motivation who may wish to join you in the hobbyist activity.

And then there's also the entrepreneurial route. The biggest risks generate the biggest rewards. Get a degree in a well-paying field, work hard, live frugally, save, continue developing hobbyist skills, and go off in say 10-15 years and go about creating your own studio.

That's the path I've decided to take, though I have no interest in game development, I'm studying computer science and I'm specializing in AI and networking... two of the greatest potential industries for pay. I won't spend my life in the sector, though, I'm doing it purely to save and start my own business.

You need to consider EVERY possible path. Of course, you're only 15, so you have a million attempts to reinvent yourself, but it's nice to have a bit of a game plan before you leave secondary school. I did, many of my friends didn't... they went to college, some dropped out, some finished and then went to work in jobs that didn't require the college in the first place. Some friends went on to uni to do courses that will benefit them in no way in the future, others are doing courses that they hate, or cannot cope with. These people have potentially wasted 5-6 years of their life, and tens of thousands of pounds.

Lot's of good advice in here. All I'll add is if you're serious then build levels, look for good mods, etc. to join, find ways to get your work noticed - look for level building competitions, etc. and don't just play games but dissect them. When you play a level consider what works, what doesn't and why.

You might also want to try and make connections - you're young but it wouldn't hurt and might help you really get a feel for whether this is for you or not. I've exchanged emails with best selling authors, artists as well as a number of game designers - you'd be surprised how often a well written and polite email gets answered. Use the internet to confirm level editors whose work you like and drop then an email if you can and try and get some feedback from the industry itself.

As SamuelRSmith says think through all the options.