According to colleagues Lance Corporal Tasker and Theo were inseparable. Their working partnership was also hugely successful.
Theo located 14 home-made bombs and hoards of weapons in just five months.
The figure is the most any arms and explosives search dog in Afghanistan has found to date.
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A rather cloudy start for most, with rain spreading eastwards, clearing to brighter skies later in the day.
The letter was signed by the CBI, British Chambers of Commerce, the EEF, the Institute of Directors and the Federation of Small Businesses.
A spokesperson said Rory Stewart's remarks were in line with the British government’s stated position.