Consultancies definitely provide experience certificates, a leaving letter, as well as a No Objection Certificate (NOC); however, it depends on the company and its policies. Nevertheless, if one wishes to have it, no one should have issues providing it to an ex-employee for future support as strong evidence of employment. You may contact your company, and they will provide it.
Regards,
Manish Srivastava
ISO Consultant & Lead Auditor
[Phone Number Removed For Privacy Reasons]