Cable only needs to be armoured where it is buried. Generally you run the armoured all the way as it saves having joins, or run the armoured up the house then use normal t&e internally.

Is the house on PME (earth bonded to neutral)? If so advice used to be don't connect the earth on the cable from the garage. The shed should be earthed via a stake connected by 6mm earth cable to the shed consumer unit

 Please Note Electrical parts to be billed as used and added to the invoice at final stage.or select them when booking .