Pointydog - you have to have the degree in England, too, for secondary teaching. The problem is in primary, where most primary teachers who have a degree in a subject other than education do not have a degree in MFL. This will also be the case in Scotland, unless legions of redundant secondary MFL teachers up there have been retrained to teach primary. But I've not seen anything along these lines happening in the professional journals that I have read.
Native speakers - IMHO it is best to be taught by a mixture of native and non native-speakers. If you have never learnt French or Spanish as an English native-speaker, and particularly if you are a gap year student yourself, you will not have a good grasp of where the problems and questions are likely to arise. Very often the French or Spaniard on the staff struggles to explain grammar or vocabulary that differs from English because they aren't aware that it is a problem. At secondary level students often prefer to be taught by an English mother-tongue speaker, unless the teacher has spent a lot of time in the UK, for example bringing up their own DCs!
I wouldn't want my child to be taught how to read, write or to do maths by an enthusiastic amateur, and I'm not too impressed at the prospect of her being taught my subject by an enthusiast whose languages weren't considered good enough for them to teach older children.
The accounts given here of poor progression, repetition of simple tasks year on year, dodgy pronunciation and ingrained mistakes have done nothing to reassure me that the situation is not as bad as I believed it to be.
If a subject is worth teaching, it is worth teaching it well. There is more to languages than enabling kids to buy their own ice cream. In the same way that year R sequencing games are planned with a view to inspiring future mathematicians, PMFL should be inspiring future linguists - and the fear of being proud that MFL is a rigourous, fascinating and enthralling challenging must be challenged, right from primary level. That means not being afraid to expose children to the grammar and even to the literature of a language to teach it like an academic subject. Children love their literacy and numeracy work, yet we teach them seriously, so there is no reason why this would not work for MFL. We must stop pretending that learning to count to ten or to sing a song is a massive achievement, even when it is more than their parents could ever do.
I suspect that I have rather a lot of volunteering in the school on my afternoons off ahead of me.