What are the £20,000+ jobs out there? and not specialised fields, more like 'easy to get jobs' that are entry level.
I would think that most jobs with a salary of £20,000 plus would require some skill level and are therefore not 'easy to get' - employers wouldn't just pay that kind of wage to someone who is unskilled in the sector. Many might not require you to have a degree though and may be reasonably quick to qualify in.