Laravel 5.0 ORM Relations

I'm trying to select a 'Site' from a Users 'Organisation'.
I can successfuly retrieve a User's Organisation (as an Organisation object) by using

$user->organisation

but when I try to retrieve the sites belonging to the organisation using:

$user->organisation->sites

I get every site in my DB returned (as a collection).

My User Model's organisation relationship:

public function organisation()
{
    return $this->belongsTo('App\Models\Organisation', 'organisation_id');
}

My Organisation Model's User and Site relationships:

public function users()
{
    return $this->hasMany('App\Models\User');
}

public function sites()
{
    return $this->hasMany('App\Models\Site');
}

My Site Model's Organisation relationship:

public function organisation()
{
    return $this->belongsTo('App\Models\Organisation');
}

User Table

• id


• organisation_id


• name


• email


• password


• last_login


• persist_code


• reset_password_code


• remember_token


• created_at


• updated_at


• deleted_at


• responsible_to

Organisations

• id


• name


• created_at


• updated_at


• deleted_at

Sites

• id


• organisation_id


• name


• address


• account_code


• created_at


• updated_at


• deleted_at

I've included everything I think will be useful here but I've missed anything I will add it as requested.

Thanks