As my models became more complex with such as the doorways and the desk which went out various directions. They all had collision barriers that allowed the player to either go through or get close to the object. After some researching online I was able to quickly fix this by going into the mesh settings and changing the option on collision presets from simple as complex to complex as simple. the result of this is that the collision boundary now hugs the base mesh allowing players to walk through doorways giving greater immersion. Below is the menu for editing the model whilst I was toggling the collision so that I could walk through with the camera.