What is the proper thing to do please. We will be using a Blackberry Cars driver from Heathrow to our hotel. Do we tip at the end or round up? Thanks!!
Pay the amount you were quoted.
Advice from Blackberry Cars themselves
It is the passenger’s choice
Which pretty much goes for tipping in general in the UK.
A "guide" to tipping in the UK:
https://www.tripadvisor.co.uk/Travel-g186216-s606/United-Kingdom:Tipping.And.Etiquette.html
It is only a guide, you don't have to tip if you don't want to and definitely don't tip for bad service.
Thanks All!