We returned last night from an excellent trip to the test day to find that the shuttle terminal at Calais has been redesigned.. You now have to go through customs security and UK border control before getting to the terminal.
It took us 80 minutes to clear all that. So if it was aimed at speeding up the process it failed miserably.
The queue for the tolls was well back onto the motorway feeder road. The hold up was as you might have guest due to the UK border check despite having all the booths manned
We were booked on the 19 10 crossing but were offered two earlier times at the check in. However, due to the process time we just managed to catch the booked departure, although no chance to visit the terminal.
So be warned. The 30 mins suggested by Eurotunnel for latest arrival is a tad Walter Mitty. You need to allow at least double that.