I failed one of my gcse's but I got an equivalent level 2 qualification with a level 3 btec. I didn't think I'd get into uni but I did by using clearing so I'd say go for the btec and consider other uni's that offer the course you want to study, have a look at the requirements and don't worry, you'll get into uni. Most uni's accept btec. You don't need work experience to get into university, you may need it to pass your btec but it depends on the college