Hi All
the problem with regard to APD assessments in the UK is due to in part to the recent official recognition of APD in the UK (2004) and the Medical Research Council (MRC) requiring new diagnostic tests based on Sound Frequency, as opposed to the langauge based tests available from the USA where they have known about APD since the late 1960s.
The MRC won government funding for its first 5 year APD research program in 2004, and this is when the Institute of Hearing Research (IHR) based at Nottingham University began their research regarding the new Universal APD diagnostic tests. All medical diagnostic tests have a specific set of assessment procedures to go through post development. The first post development process is the "ethics procedure" or initial clinical trials, this happened 2009 -2010, the final steps are more beuraucratic and as recognising the new diagnostic tests to be the official diagnostic test used in the UK for a UK recognised disability, which is where we are now.
Consultants at both GOSH and the neighbouring National Hospital for Neurology and Neurosurgery have been part of the MRC research program developing the new diagnostic tests.
According to the IHR 2004 APD pamphlet 10% of children have some degree of APD. And there are more issues which can cause APD in adults, which in the UK means that some 6 million people have some degree of APD. Two hospitals could not cope with that many referrals. Which is why APDUK has been lobbying for more assessment centres around the UK.
Another issue is that APD is a specialised diagnosis for audiologist to carry out, The audiologists need to be trained how to carry out the diagnostic tests, and how to interpret the results which requires some degree of training. APD assessments also require sound-proof booths in which to perform the diagnostic tests, and there are a number of tests in the APD battery of diagnostic tests, which may require the creation of more than one sound proof booth per assessment centre.
The public awareness of APD is increasing and as a result the demand for assessments is increasing, but at this point in time there are only two assessment centres, hopefully when new are officially approved there will be a great many more local assessment centres around the UK using recognised UK APD diagnostic tests.