Wow, that looks like a Mk1, so the take-off roll must have been a loooooooooong one!
It usually was. On the principle of ignorance is bliss I was quite often glad I was sitting facing aft!
and it was usual to have a large gap, the wrong way, between Stop and Go Speeds at places like Masirah. Ah, those were the days!!
One of our crews had a late morning takeoff from Dubai. The co-pilot had never operated in the tropics before and calculated the fuel load using the tower OAT of 40C, not realising that out on the runway it was probably nearer 50C. The captain managed to drag it off just as the lights flashed under the wheels, and resolved to check the fuel calculations next time!