Mortgage company asking for a structural report

[InertialTooth45]

Afternoon. I'm currently going through my first house buying experience. I've had an offer accepted on what we think is the perfect house after quite some time looking. Mortgage DIP given, then when the mortgage company carried out their valuation they have refused to value it without a full structural survey being carried out due to apparent signs of movement.

When viewing the property there was nothing apparent (to us) so this has got us quite worried. Having already paid out quite a lot in fees I am reluctant to have to spend more money on something that could potentially make the property a no goer.

Would it be reasonable to ask the vendor to cover the costs of the structural survey since regardless of who buys the property this issue is likely to come up.

Thanks