The key benefits of this service have now been removed:

1. I could put heavy/awkward bags into a Zipcar outside my flat, and then put them straight from the car onto a luggage trolley at T5 for the short walk to check-in.
2. I could use Google maps to predict (pretty much) exactly what time I'll arrive at T5 check-in allowing me to plan my trip with certainty, and the journey took 45-60 minutes as opposed to 75-90 minutes by tube.

Now, I'll be faced with lugging heavy bags on to and off a shuttle bus, and there's uncertainly about how often the bus is and how long the transfer takes. It could add another 30 minutes onto a 45 minute journey.

Without heavy bags, I might as well go back to taking the tube as it won't take much longer from South London and I'll have more certainty about my arrival time, plus save a few pounds.

With heavy/awkward bags, or needing a very early departure, I'd now rather either take a taxi (which will be quicker) or use Airportr to take my bags and go HBO on the tube.