Do all final exits from a building (where there  is a possibility that members of public entering may be wheelchair users) have to open in the direction of travel?  Or can they open inwards?

There is a Dental practice where they have suitable door widths for wheelchairs, a ramp at 1:12 ratio, disabled toilets, etc.  But the main door used by all clients opens inwards?!  

I've had a look at Gov.com guide for disabled means of escape but cannot see it mentions this.

Typically, occupancy is below 60 people so an inward opening door appears acceptable in some guides, but my only concern in that wheelchair users will not be able to open door quickly, or even block the exit completely?!  

Any guidance much appreciated as always.

Many times there will be no specific answer to a fire safety question you have to use your knowledge and common sentence. In this case, under normal conditions, wheelchairs will cause little problems and the staff will most probable assist the person. So have this written as a PEEP and included it in the fire plan.

Thanks Tom.