User blog comment:RuckusQuantum/Studying British Accent/@comment-25052433-20150519175246

I've written quite a few Brits in my time, the Leary brothers from my Tobit stories for example, and I found the easiest way to make authentic UK characters is to study their slang terms and common phrases and such.

Here are a few of the common ones:

Que up. (Line up.)

Lift (Elevator)

Muppet (Idiot, useless person)

Straight away (Right away)

Ring my number (Call my number)

There are way too many to name, but it's certainly worth a little research. You also have to keep in mind that the UK is very muck like the US in the fact that different regions speak somewhat differently. For example, you woouldn't write a character from Boston talking the same as a character from Jackson, Mississippi. The same can be said for a character from Scotland vs a character from London.

Either way, hope this helped a little.