As LittleOldMe has indicated, you must have a degree to obtain Qualified Teacher Status (QTS) and you must have QTS to teach at primary or secondary levels within the state sector. The only way into teaching without QTS is to work in the independent sector. There are still a few (usually small) schools who employ teachers without QTS. These are usually people who have particular talents in fields such as art or music. The only reason that such schools employ non-QTS staff, however, is financial. (i.e. they can't afford to pay a QTS art teacher �25k so they employ a local talented artist for �15k). This route into teaching is not to be recommended because either a talented teacher is paid 'peanuts' for their work or, worse, an untalented teacher is allowed to destroy children's enthusiasm for a subject.
Chris