ok. A run down of some of the models. Just a few of the windspeeds shown. Some of the variation is because the low is progged for more north or more south a path, some because they all have different depths and speed that they are travelling through, some because of the intervals at which each chart is incremented in.So treat them as a rather broad hand sweep at the moment. (I truly hope that paragraph makes sense)
Arpege 12z - Not nearly as bad looking for the bristol channel. Still brings widespread gusts of 70-80mph across the south and into London. Higher around the Wash mid afternoon.
UKV - brings gusts in of the 90-100mph off the north Devon coast, 80+ around the Bristol area, 90-95 through part of central southern England, higher along the Sussex coast 80mph for a time in London, 85 inland from the Wash.
ICON - 100+mph south cost of Wales, 90mph Bristol, 80-90 through central southern England and south east coasts 70-80 through London, 90 in Essex.
UK Met Similar to Icon, with a little less in Essex but very stormy around the Wash mid afternoon.
GFS - not so much use for this rough analysis. It has time intervals of 6 hours which misses all the details.
The main takeaway I think from this, is that there isn't too much point in trying to work out what sort of wind speeds you will see, almost all model runs bring in a very deep and potentially destructive storm.
Expect railway lines to close on Friday. LNER are asking people not to travel, SWR are saying that there will be a network wide speed limit.