Hi!

Well am supposed to travel from Mumbai, India to Vancouver , Canada (BOM - YVR) via London Heathrow.

The question I have is that I have to Transfer from Terminal 4 to Terminal 3 at Heathrow. My bags will be through checked in upto YVR.

I want to know if it is possible to transfer between the terminals AIRSIDE.

I will not be having a Visa for the UK nor a DATV as I have A Canadian Visa and am not required to have one.

Hence I under no circumstance can cross out of immigration and then take any kind of transportation.

Thank you.