Address Proof if staying at sister's house in UK

[flatsaheb]

I'm holding a Tier 2 ICT Long Term Staff Migrant visa and currently based in London. I'm applying for a Tier 2 ICT Staff Migrant visa for my wife. Currently I'm staying in London at my sister's house along with her family and not paying house rent, thus no tenancy agreement. So I need to know in absence of tenancy agreement what can be furnished as proof of stay or address in London.

Thanks,
FAL

[sreddy111]

A letter form employer confirming you address of stay may help

Alternatively, you can request your Sistar r to add your name on Water bill where Utility bill is accepted as address proof