tier 2 Guidance
https://www.gov.uk/government/uploads/s ... 1_2015.pdf
Point 168 - you can go by first point as below and dnt need to submit any document as I did. Or for added advantage have your employer check maintenance support as yes
you currently have entry clearance, leave to enter, or leave to remain as a Tier 2 skilled
worker; work permit holder; Jewish Agency Employee; Member of the Operational
Ground Staff of an Overseas-owned Airline; Minister of Religion; Missionary; Member of
a Religious Order; or Representative of an Overseas Newspaper, News Agency or
Broadcasting Organisation; or
your A-rated (Premium), A-rated Small or Medium-sized Enterprise (SME) or A-rated
sponsor certifies on the Certificate of Sponsorship that they will maintain and
accommodate you up to the end of your first month of employment in the UK if required.
Your sponsor may limit the amount of the undertaking, but any limit must be at least
£945; or