With a large vote for Reform (which will mainly be a protest vote), the pressure will be on Labour to actually effect some change for the better and quickly. Alistair Campbell is right - there are no such things as 10 year elections nowadays and anything could happen in 5 years time.
A "loveless landslide" sounds about right to me. It will be very interesting to see how much the actual number of votes cast has gone up for Labour, if at all. 4 parties over 10% will mean that the cries for electoral change will get very much louder.