Love questions like this and I'm sure others do. It's like virtual shopping without spending any money!
Unless you know how to fix everything on your own bike, are fully committed to road cycling and looking after the bike, I'd look for a bike with an aluminium frame and a carbon fork as you're less likely to damage it by overtightening something or knocking a hole in the frame with a lock etc. Unless you plan on racing in the future, I'd get something with disc brakes (not currently allowed in road racing).
Check out bikes with a shimano 105 groupset (shimano ultegra is higher spec but it's better for your budget to go on a good frame than better components as they can always be upgraded later). Other groupset manufacturers are available but shimano is the most widely available so better for sourcing replacements.
It's important for morale to have a bike you like the look of but, unfortunately, a bike which fits well will mean you enjoy riding it more so try to get a few test rides in on different bikes and find out what you are comfortable with in terms of size and shape.
All bikes at this budget will come with cheap stock wheels so you might want to consider spending £1000 on the bike and use the remainder for some better wheels. You may also want a saddle which fits you better, some bib shorts, gloves (assuming you already have a helmet!), tyres, pedals, shoes, cleats and of course ICC membership ;-)
Pretty much anything can be upgraded if, in the future your interest in road cycling reaches the obsessive level that we are all guilty of.
Finally, welcome! Look forward to meeting you and your new bike.