My mates rate was £170 for 8am till 6pm, so £200 per day may be a tad optimistic, but then labour cost has lots of variables too!
As I see it, it's more than just 1 beam going in, or I may not have paid that much attention to your photos.
You've got to a figure of about £15k there with your estimate, as I said, I think your labour cost is a bit on the low side, esp as you are sourcing materials, which is usually a source of extra margin for a builder as they get trade rates.
£15-20k. To the nearest £1k is pretty much impossible without being there and seeing the job.
As I see it, it's more than just 1 beam going in, or I may not have paid that much attention to your photos.
You've got to a figure of about £15k there with your estimate, as I said, I think your labour cost is a bit on the low side, esp as you are sourcing materials, which is usually a source of extra margin for a builder as they get trade rates.
£15-20k. To the nearest £1k is pretty much impossible without being there and seeing the job.