I strongly recommend using The Six Moving - very professional service.
1. They did an amazing job moving large and heavy furniture from one very tight location (narrow Victorian house) with many stairs to another very tight location - again with many stairs. They expertly fit all pieces without damaging the furniture or the walls.
2. They were cheerful in spite of making hundreds of trips up and down zillions of stairs with heavy objects.
3. They are good at dealing with bad neighbours. We moved from a street with the most miserable neighbours imaginable - The Six was 'grace under fire' with all of the harassment they received from our horrible neighbours (thankfully now our former neighbours).
4. They are able to pivot - we realized at the last moment that we had a lot of things that needed to be packed. The Six arranged for packers to pack our stuff a couple of days in advance of the day we had scheduled - again - at the last moment. They were so flexible.
I strongly recommend this company - and will use them again for our next move.