We searched for a very long time for our Wifi package when moving into our house. We went with BT as we had been recommended them, and I am SO glad we did. We've both been working from home and not once have we had an issue with our connectivity! We use 2 xlaptops, 2 x phones, TV and sometimes the playstation on and we have not incurred a problem yet, which is fantastic!
We also were gifted a free sound bar (worth £75) when we joined, so make sure you ask about bonus's if your looking at joining. Our neighbours went with Virgin and have many outages whilst working from home which isn't ideal! Highly recommend BT, especially as they seem to be going through some rebranding at the moment and the company seems to be improving!