@Jacquil that you use your line that is sold for domestic use to deliver a "critical service" is your decision but it does not get you any priority so you need to have a back-up-up plan. This isnt Sky being difficult it is a fact of life that many people working from home fail to realise that it usually takes several days to fix faults on domestic lines.
If the issue is your hub loosing connection to the exchange call Sky as line drops can indicate a fault. Whether they can get Openreach to check the line depends on how frequently the drops are and whether there are other faults.
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65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
