I used TLC for rope light - ordered it on a Sunday night at about 11pm and it was delivered at 9.30 am the next morning. They must have sent the order to my local Exeter branch who cut it and bought it around - I was stunned to say the least!

But really chuffed at the service
I'm not sure if there are different thicknesses, but I do know that there are different "whites" in that the one lot I bought was yellowish white and the other was a much brighter white. The yellowish being standard rope-light and the whiter being led rope-light
stoobie