They must be scary as hell in battle. This is from the program:

The Massed Pipes and Drums
The Royal Scots Dragoon Guards
1st Battalion Scots Guards
1st Battalion The Royal Scots (The Royal Regiment)
1st Battalion The Royal Highland Fusiliers
(Princess Margaret's Own Glasgow
and Ayrshire Regiment)
1st Battalion The King's Own Scottish Borderers
1st Battalion The Royal Gurkha Rifles
The Royal Air Force
The City of Invercargill Caledonian Pipe Band
The Canadian Scottish Regiment
The Cape Town Highlanders