Hi Elias
Although lawers have more knowledge in these issues, I do not think that you could get away with the test unless you meet atleast one of the exemptions they have mentioned. See below.
Exemption from meeting the language and knowledge of life in the UK requirements - age and infirmity.
It is possible to disregard these requirements where an applicant is over 65 or has a mental or physical impairment that would prevent them from learning English. However, the Home Office would consider exempting someone under the age of 65 on physical and mental grounds only very rarely. This would be in cases of long standing and permanent disability, rather than a mental or physical ailment that could respond to treatment or therapy. And the nature of the disability must be such as to prevent a person from learning English rather than requiring special arrangements to be made for learning it.
The grounds for exemption of people under the age of 65 needs to be compelling, such as where the applicant:
i. is suffering from a long term illness or disability which severely restricts mobility and ability to attend language classes; or
ii. has a mental impairment which means that they are unable to learn another language.
Applicants claiming exemption must include in their naturalisation applications detailed reasons for doing so. This should include documentary evidence of age, for example by producing a passport or birth certificate, or evidence from an appropriate medical practitioner of any physical or mental impairment that would prevent them from taking a test. They should be aware that test centres can cater for applicants with a range of disabilities, for example limited mobility and visual impairment.
Further advice is available from the Border and Immigration Agency Nationality Customer Contact Centre on 0845 010 5200.
source: http://www.ind.homeoffice.gov.uk/applying/nationality/knowledgeoflifeintheuk
