Breeze to the Thames Barrier Park North

A ride to the Thames barrier park north, hopefully using the bike bus through the Silvertown tunnel.
We will cycle to Greenwich, and continue to the bike bus bus stop near the O2. It is about 15 minutes from the north side to the Thames barrier park north. We will return by much the same way.
If necessary, we have an alternative route; out via the Woolwich ferry and back through the Greenwich foot tunnel, although this would make it a longer ride. Timings take this into account, although the waiting time and transit time through the Silvertown tunnel is an unknown quantity atm.
You should consider this an all day ride.