Complex sentence: The out buildings and stables at the side and rear of the hall were used as workshops, these housed Aerial riggers, a Barracks store, M T Office, Transport Garage workshop and the Instrument Mechanics Laboratory.
Split into simpler sentences: The out buildings and stables at the side and rear of the hall were used as workshops. These housed Aerial riggers, a Barracks store, M T Office, Transport Garage workshop and the Instrument Mechanics Laboratory.