Public transport services (and roads) tend to run along corridors
of requirement - which in the South East of England means they
mostly radiate out from central London like the spokes of a wheel.
Almost everything starts from (or passes through) Central London;
for inner areas there's the tube (or Underground), for the outer
suburbs there are local trains, and for places further out there
are express trains. Because they stop so many times, you'll
find that the tube journey from London to Uxbridge takes almost
as long as the train journey from London to Hove.
If you want to do something off a radial ... either you're looking
for the exceptional piece of public transport (there are a few),
or you are forced to go in and out of "town". Your combined
journey falls into this category.
Connections between different types of transport (e.g. bus and
train, or local train and tube) are sometimes good, but intergrated
transport planners are poor-to-nonexistant. I don't know of any
site I can type in a "from" and "to" postcode and have it come up
with an integrated journey plan.
If you go to
http://www.nationalrail.co.uk/info/fs_info.htmyou'll find a link to "maps"; have a look at the "London and South East" and
"London Connections" maps, which together will show you all the rail routes
between Uxbridge and Hove (and possible living-places between).
There's a bus map you can download for north west london via
http://www.londontransport.co.uk/buses/buses_map.shtmland that just goes out as far as Uxbridge.
There's a bus map for the Brighton area at
http://www.buses.co.uk/fares/welcome.htmI don't think you'll want to use the buses for long distance parts of
the commute; there are some bus lanes around BUT they tend to get caught
in the traffic. You might like to search for the Jetlink bus (route
numbers like 707 and 747) which I think runs Brighton, Gatwick,
Heathrow, Luton ... and Uxbridge is close to Heathrow. Not sure if
there's an Uxbridge stop as it carries on to Luton - I doubt it.
I have travelled around a bit; could be more specific in helping if
I knew ... (a) More detail of "Uxbridge". Could be spread over quite
an area. Do you have a postcode for the office? Does "Stockley Park"
ring any bells - big office area that's not REALLY Uxbridge (b)
Ditto for Hove, though not such a big area. (c) Which of you enjoys
a long commute ;-)
By the way - as I recall, Uxbridge tube station does have
services all day. The underground map shows two lines going
there; I think the "Metropolitain" runs from about 6 in the
morning until midnight ... but perhaps the Picadilly is only
at peak times; outside rush hour, simply change at Rayner's
Lane.