Thanks for all the replies, these have been of great help and are somewhat reassuring to know that their are pilots out their with speech impediments.
However I realise that I need to give you guys a better picture.
I am 19, aspiring to be a pilot, I have no PPL and/or any related flying experience. I am currently at uni however only just found out about these schemes by BA and VAA which seem to be better than anything I can get out of full-time education. I did my research and decided to pursue the matter further, however I held back my excitement and told myself to get a Class 1 Medical from my local NATS (Swanwick) - if I failed this, I told myself it was pointless.
Come the medical, I didn't actually fail but neither did I pass. I've had asthma in the past 5 years but never had to use a inhaler - despite this i've been told I have to find a lung reactivity specialist and be cleared. I was also pulled up, as explained above, for declaring that I have a mild stutter (I don't know how I would operate over a radio though, i've never tried.)
So the doctor said they would have to get in a "CFI" which she explained to be a Chief Flying Instructor. I've been told that this CFI will somehow test me and give their feedback to be passed. I realise their is a lot of confusion regarding this, as you all have expressed, and I myself am confused because (I believe) if I hadn't have declare this I would have been passed (excluding the asthma of course). I was told by the doctor though that some authority is cracking down and actually prosecuting people who don't declare stuff.
Hope this clarifies everything!
Ta