TRIPREPORT | Virgin Atlantic | Economy | Mumbai - London Heathrow | VS355 | Boeing 787-9 | G-VSPY 

Hi Duane, the flight was quite good as you can see in the video. I did check in 2 bags and they weren't strict with the checked bag' weight.

Are there any dimensions on checked in bags? Medium or large size suitcase?

There any dimension restrictions on the check-in bags, your bags should be fine as long as they can fit on the conveyor belts that transport the bags. If you have oversized baggage, then you can drop them off in the oversized drop-off section in the check-in area.