Helenandy126: Travis Perkins came in at the best, but I have a trade account with them and I bargain hard. If I remember, Furness sold direct but they just couldn't get anywhere near what I wanted to pay. There are thousands of bricks out there, you just need to narrow it down but go with the big names such as Hanson or Ibstock as they'll have close copies of most bricks out there. I'm not sure if the merchants still do this but once you give your site address and your brick, they register it with the manufacturers and then no other merchant can quote, meaning your stuck with their price. That's why you'll then be able to find a close match with another manufacturer so that you can then get another price for the different brick.

Thanks Kat D 🙂. Mine are called Vintage Yellow and I asked the company to order them for me without the red bricks as I wanted to keep the colours more neutral. It’s a good idea to order lots of samples from different companies as the texture as well as colour of brick slips varies greatly. Also a good idea is to do a mock up by tiling some of the brick slips onto a board with cement and propping it up against your wall to see if it suits, since it will probably be main focal point so it’s important to get it right! Attached is link to Slim Bricks where I ordered from online. Post a pic when your project is done 😊 https://www.slimbrick.co.uk/vintage-yellow-corner-box-10.html

Brick acid is the go to chemical. Test a small area first to make sure the tiles don’t get damage do. Also you must wear protective clothing such as glasses, gloves and a mask

It is pretty messy isn’t it? You could get it re-pointed where the cement is dug out and redone and then leave it natural. I wonder if it is lime mortar? Or you could get it plastered and once it is thoroughly dry you can paint with emulsion.