Github user flangelo commented on a diff in the pull request:
https://github.com/apache/incubator-guacamole-server/pull/122#discussion_r150742225
--- Diff: src/protocols/rdp/keymaps/en_gb_qwerty.keymap ---
@@ -0,0 +1,56 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+parent "base"
+name "en-gb-qwerty"
+freerdp "KBD_UNITED_KINGDOM"
+
+#
+# Basic keys
+#
+
+map -altgr -shift 0x29 0x02..0x0D ~ "`1234567890-="
+map -altgr -shift 0x10..0x1B ~ "qwertyuiop[]"
+map -altgr -shift 0x1E..0x28 0x2B ~ "asdfghjkl;'#"
+map -altgr -shift 0x56 0x2C..0x35 ~ "\zxcvbnm,./"
+
+map -altgr +shift 0x29 0x02..0x0D ~ "¬!"£$%^&*()_+"
+map -altgr +shift 0x10..0x1B ~ "QWERTYUIOP{}"
+map -altgr +shift 0x1E..0x28 0x2B ~ "ASDFGHJKL:@~"
+map -altgr +shift 0x56 0x2C..0x35 ~ "|ZXCVBNM<>?"
+
+#
+# Keys requiring AltGr
+#
+
+map +altgr -shift 0x29 ~ "¦"
+map +altgr -shift 0x05 ~ "â¬"
+map +altgr -shift 0x12 ~ "é"
--- End diff --
I guess technically the below would be handled via Unicode in RDP...
---
