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email: info@dyslexiaservices.net


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DITTAS LIMITED Incorporated in England and Wales 07579261

We offer a comprehensive range of Dyslexia Assessments for all ages  



Full Diagnostic Dyslexia Assessment  

A Diagnostic Dyslexia Assessment for either children or adults consists of a full range of tests to assess underlying ability, attainment in spelling, writing, reading and numeracy and a range of underpinning tests to assess working memory, speed of processing and phonological awareness. The assessment takes around three hours and can be administered over either one or two sessions.


Following the assessment a full, detailed report is written and a feedback session arranged. The report is optional.


The fee is charged in three parts: £75 as a deposit before the assessment, £210  when the assessment is completed and a further £155 is due when the report is written. If dyslexia is not diagnosed or a report is not required the client has the option to decline the report and will only have paid for the deposit and assessment.


The assessment can be conducted at our office in   Orpington or Croydon or at the client's home in Beckenham or surrounding area. Assessments conducted at a client's home incur an additional fee, depending on location.



DSA assessment
Combined Dyslexia and Dyscalculia 
£595 ( approx 4.5-5hours hrs*)  
This can be spread over 2 session if required 

 This assessment includes the full dyslexia testing as described under the dyslexia assessment column. In addition a range of numeracy tests are administered which take approximately an 1.5- 2hours. This includes a standardised test of mathematical ability, timed tests of mental maths including multiplication, addition, subtraction and division.  a maths learning style questionnaire,  and assessment of numerocity and additional cognitive tests which can impact on numerical attainment.






Approximately 60% of dyslexic individuals have difficulties with numeracy and this is part of their dyslexic profile. Dyscalculia is a specific difficulty with maths which is very severe and often means they have little concept of number. This assessment will identify whether the numerical difficulties are related to their dyslexic profile or are a separate co-occurring specific learning difficulty known as dyscalculia.


The assessment can be conducted at our office in   Orpington or school  Assessments conducted at a client's home or school incur an additional fee, depending on location. 


As with all our assessments, we do not make the client have the report if no difficulties are identified the report can be declined. The fee for the full assessment without the report is £350. 

Exam Access Arrangements Testing
from £100

All assessors hold patoss APC and AMBDA 

Shorter Diagnostic Screening  Assessment with a short report  

( 6-8  pages) 

Not suitable for DSA or ECHP purposes 


This assessment is for children or adults who have been diagnosed with a Specific Learning Difficulty or who have previously received Access Arrangements in either National Curriculum Tests or GSCE, GNVQ or GCE examinations. The assessment tests reading accuracy, reading speed and reading comprehension; spelling, written fluency and accuracy; memory and speed of processing. Additional tests are sometimes included. This testing can only be conducted if the school is in agreement and contact has been made between the assessor and school SENCO. 


It may be possible to offer this assessment at a lower fee if the school only require completion of a form 8 and not a written report. 

This is a  Dyslexia Screening ( not a formal dyslexia assessment ) for children age 9- 14. The following tests are administered during the assessment: tests to assess underlying ability, attainment in spelling, writing, reading and a range of underpinning tests to assess working memory, speed of processing and phonological awareness.

In order to reduce the costs and the time taken to assess the child, a reading comprehension test and a free writing task is undertaken at home prior to the assessment. If additional testing such as testing receptive language or visual processing skills is recommended the client will be given the opportunity to purchase these test at an additional cost. 

Instead of  a full report  a shorter report

( 6-8 pages) is produced. This will contain as detailed a conclusion and recommendations as the long report but the summary of results will be condensed. 

This assessment is conducted in one session. 

This report can not be used for DSA or ECHP evidence.