Hi All,
Thanks for everyone who replied or read it. This is just a quick update to say that given your feedback I slightly amen ded the plan and (according to the plan) the wall is going to be roughly 9' tall, and the width is as follows: the first 7' from ground: 3.4' wide; thereafter 7' wide and the the top 2' are tied in on both ends (house + shed), whereas the first 7' is only tied in on one side (house). There will be two concrete lintels to bridge the ga p above the gate. Partially the reasons behind planning to make the wall taller is that the s hed wall is a 60-year-old single skin wall and the top part of it (the bits which are above the roof level) is already a bit splay, hence the 9' doubl e skin wall will provide support against further splaying (the shed wall is at right angle to the new wall).
With regards to cables, I decided to be future proof, so I will put two con duits inside the wall, one is a 25mm (for the 10mm T&E which takes the elec tricity out to the shed - existing feature just modifying cable run (it goe s without saying that a part P registered electrician will come to re-certi fy it)) plastic conduit whereas the other one is only 20mm (or rather 25mm, as I have accessories for that) plastic conduit, for miscellaneous lightin g cables - currently no plan to use it - maybe for the lights. With regards to doorbell, my other half said she doesn't want a doorbell on the side gate, so that is off the agenda.
Thanks for your help and comments,
Feel free to apply positive criticism against the above,
Kind regards, Attila.