I ended up using EC Minibus for transportation from Heathrow to a central London Hotel, as well as for to the Southampton Cruise Terminal.
Highlights:
+ Simple booking via their website. It also seems that they used a link on Viator; however, booking directly on the website seemed cheaper.
+ Communication was clear and well laid out on where to meet the drivers. They were especially helpful during an issue that arose when arriving at Heathrow and the driver having issues meeting us at the assigned meeting point due to increased activity at the airport (apparently it was a popular bank holiday I chose to travel on)
+Cars/vans used were clean and as advertised
+Drivers arrived on time and were friendly
+ Price - Honestly, it was relatively reasonable, especially given the fact it provided for a smooth travel day for my traveling companion who would have issues on the Tube/trains even without luggage
Tips:
+ When making your booking, make sure you set your pick time for an hour and a half after scheduled arrival time to provide a buffer time to make it through customs and retrieve your luggage if flying internationally.
+Make sure to be honest about your luggage that you are traveling with and abide by their rules, especially on shared rides.
I would use their services again if I find myself needing them. read more