If I recall correctly, it was a B-sys hyd leak. So we planned to use A-sys and s'by brakes until lined up, pressurise B-sys for take-off (giving us normal brakes with maxarets in case we had to abort the take-off) and depressurise it once the gear, flaps and slats were retracted. Then repressurise it again for landing. If we lost B-sys hyd contents during flight, there was every chance of a tyre(s) bursting on landing (no maxarets) - but that was an acceptable 'wargoer' risk. No doubt one that wouldn't be allowed today....
The VC10K2/3 galley was a single hot cup and a small oven. From which, as the groundcrew will doubtless recall, some noteworthy feasts were often produced.