Sign Language is often the primary, or first, language for people with a significant hearing loss. It has a different grammar structure to standard English as well as a reduced vocabulary and hence can impact on the reading and writing of standard English for some users.

The unofficial sign language used in Singapore is SgSL, which is a mixture of several signed languages. When booking and using an SgSL interpreter, it is important to ensure that the person is appropriately qualified and operates at a good standard. Poor interpretation can impact on performance. Interpreters will need breaks during long meetings and often two are required to take over from each other.

Here is the Wikipedia page on all sign languages used in Singapore. We also have information on sign language interpreting services from the Singapore Association for the Deaf.