Hi Mandy
Try not to second guess what an assessor will think when reading your form. You don't have to tick the box - just write "see below" or " see additional sheet" and write the explanation just as you have done above, and that clearly says why you could not use them. No one should ever be penalised for not being able to use an aid when there is a valid reason for them not doing so.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
