Karabiner Elements config for mapping a Microsoft Sculpt Keyboard with UK Layout, with exceptions for MS Remote Desktop. Maps backslash (\), pipe (|), backtick/backquote (`) , quote ("), tilde (~) and hash/pound (#)

uk_sculpt_keyboard.json

{
  "title": "UK MS Sculpt Keyboard (Exceptions for MS Remote Desktop)",
  "rules": [
    {
      "description": "Backslash ",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "non_us_backslash",
            "modifiers": {
              "optional": [
                "any"
              ]
            }
          },
          "to": [
            {
              "key_code": "backslash"
            }
          ],
          "conditions": [
            {
              "type": "frontmost_application_unless",
              "bundle_identifiers": [
                "com.microsoft.rdc.*"
              ]
            }
          ]
        }
      ]
    },
    {
      "description": "# (Hash/Pound)",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "non_us_pound"

          },
          "to": [
            {
              "key_code": "3",
              "modifiers": [
                "left_option"
              ]
            }
          ],
          "conditions": [
            {
              "type": "frontmost_application_unless",
              "bundle_identifiers": [
                "com.microsoft.rdc.*"
              ]
            }
          ]
        }
      ]
    },
    {
      "description": "Swap \" and @ ",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "quote",
            "modifiers": {
              "mandatory": [ "shift"]
            }
          },
          "to": [
            {
              "key_code": "2",
              "modifiers": [
                "shift"
              ]
            }
          ],
          "conditions": [
            {
              "type": "frontmost_application_unless",
              "bundle_identifiers": [
                "com.microsoft.rdc.*"
              ]
            }
          ]
        },
        {
          "type": "basic",
          "from": {
            "key_code": "2",
            "modifiers": {
              "mandatory": [ "shift"]
            }
          },
          "to": [
            {
              "key_code": "quote",
              "modifiers": [
                "shift"
              ]
            }
          ],
          "conditions": [
            {
              "type": "frontmost_application_unless",
              "bundle_identifiers": [
                "com.microsoft.rdc.*"
              ]
            }
          ]
        }
      ]
    },
    {
      "description": "~ (Tilde)",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "non_us_pound",
            "modifiers": {
              "mandatory": [ "shift"]
            }
          },
          "to": [
            {
              "key_code": "non_us_backslash",
              "modifiers": [
                "shift"
              ]
            }
          ],
          "conditions": [
            {
              "type": "frontmost_application_unless",
              "bundle_identifiers": [
                "com.microsoft.rdc.*"
              ]
            }
          ]
        }
      ]
    },
    {
      "description": "` (Backquote or Backtick)",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "grave_accent_and_tilde"

          },
          "to": [
            {"key_code": "non_us_backslash"}
          ],
          "conditions": [
            {
              "type": "frontmost_application_unless",
              "bundle_identifiers": [
                "com.microsoft.rdc.*"
              ]
            }
          ]
        }
      ]
    }
  ]
}