At a weekend in Birmingham city centre car parking at Londonderry House, Dalton Street B4 7LX is £5 a day - brilliant. I booked online and got sent a QR code to use from my smart phone. I chose this car park as it was cheap and only 10 minutes walk to the Town Hall, Victoria Square. Upon arrival, with the pressure of a car behind me also entering the car park, I couldn't immediately see the scanner for the QR code, so I took a ticket and entered, found a space and came back down to locate a helpful assistant, Adam Morgan was extremely patient and helpful with me, showing me exactly where the scanner was on the machine so that on my exit I would scan the QR code and the barrier would lift, and just in case, he showed me where the assistant button was. Feeling relieved I asked for directions to Victoria Square, at first he sent me in one direction and then chased after me to correct himself, and it was really easy. Thank you for being so helpful.