Is the UK convenient to travel by train?

I'm going to be doing some intercity travel to Scotland and such, so I wanted to know if it is convenient in terms of time and location.

There are lots of trains in the UK, so locationwise you're good. Especially in Scotland, there are stations everywhere! In the more remote regions of Scotland, many stops are request stops though, so be careful you don't miss it!

In terms of time, it can be variable. Sometimes the trains are ok, but there are often delays. I do recommend going by train - quick and easy - but I would advise you allow time for delays as it can really mess things up if you've only allowed 5 minutes to change platforms or whatever and your train is 6 mins late.

Intercity travel should be fine though, most trains are frequent, some running like every 4 minutes or something... Checkout http://www.nationalrail.co.uk/ for an idea on train timetabling.

Also be aware of the prices - quite expensive in the UK apparently!

But otherwise, good stuff :) Go for it!

Yes the train is fine and punctuality has improved radically in recent years. The rail network is dense and frequent. You also see a lot of the country as you travel.
There are two routes from London to Scotland - Virgin Trains from London Euston to Glasgow (some trains extended to Edinburgh), and National Express East Coast trains from London Kings Cross to Edinburgh (some trains extended to Glasgow); the cheapest fares are those you book in advance as far in advance as possible. Services within Scotland are provided by Scotrail. If youl live outside the U.K. you can buy a Britrail pass before you arrive here; these are very good value for money.
www.britrail.com
www.epicsavings.co.uk
www.nationalexpresseastcoast.co.uk
www.virgintrains.co.uk
www.firstgroup.com/scotrail
www.nationalrail.co.uk