Surely it was erected there so it could be seen by 18 million vehicles a year passing on the A303, who turn on EH when the tunnel is built, trapping them in Saville Row they eat their way towards the ground floor swallowing whole listed buildings in their path, then just at the very last minute dupedheroes Captain Cossons and Tornado Thurley discover defunct plans for a tunnel and do what EH do best - bore their way out of it....

Sorry to all concerned, a funny five minutes overtook me....

The Crazy Frog has me for a ringtone !

VBB