I got my visa back yesterday. Applied for it through Travcour:
Saturday 24 March: The final pieces of paperwork for my Iranian visa application arrived (including details of who else is booked on the Wild Frontiers Land of the Peacock Throne trip)
Monday 26 March: Checked with Wild Frontiers that it was still worth applying for an Iranian visa. Their answer was “Yes, asap.”
Tuesday 27 March: Posted forms, passport etc to Travcour. 1st class post, recorded delivery
Wednesday 28 March: Travcour emailed confirming receipt
Monday 02 April: Travcour emailed confirming they had got a visa and were posting everything back to me. 1st class post, recorded delivery
Tuesday 03 April: Passport and visa arrived.
I was rather surprised given the current state of affairs, but it suggests a quick turn around time by Travcour/the embassy. Then again, as Simon remarked, “They’re probably not getting many applications for tourist visas at the moment.”