Sex in the Suburbs: An Eastern European leopard print 'girlfriend experience'

But just seconds away from the hustle and bustle of the town centre - a different world unfolds.

In a plush penthouse at the top of a tower block, sex is being sold on a daily basis.

Avelina describes herself on the internet as a high-class fun-loving escort, as well as professional and independent.

This pretty girl with long blonde hair looks a lot younger than the 28 she claims to be. There is a short message followed by a price list and her mobile number for anyone to see.

One quick phone call can obtain her post code. It takes me to an address in the middle of Dudley. The Town Hall is seconds away, the High Street two minutes on foot.

Avelina presses the buzzer to let her customer in. Half way up the stairs, the mobile phone beeps with a text message containing the code to get into the section where her flat is.

It is unnecessary. A friendly woman pensioner happens to be coming the other way and holds the door open anyway.

A pretty face peeks from behind the door. Avelina is as she described on her page. A curvacious young woman with a short dress and plunging neckline.

The flat has plush pillows, a large TV and a breakfast bar - all very smart and furnished for a young professional.

She leads the way into a small bedroom, although there is another larger one in the flat too.

There is a smartly made double bed with leopard print duvet and pillows. Next to it there is a candle on a bedside table, part of what Avelina refers to as the 'girlfriend experience'.

Dark brown curtains are drawn. Avelina herself is very friendly, far more interested in asking questions than answering them.

She reveals she is Slovakian but will not say how long she has been in England.

Avelina takes the money and leaves the room. She is keen to get on with things.

"We will have to be quick," she says. "I have another appointment straight after this and then I am done for the day. I don't work all the time."

After chatting for a little longer, I break the news that I can't go through with it.

She seems a little hurt, and asks why. Is there a problem with her? Is it because she is Slovakian?

Avelina accepts the pre-planned excuse but does appear geniunely hurt, as well as worried about her client, asking if it is because of work, family or a wife.

She says a polite goodbye and says to give her a call if things change.

Outside, people are still milling around, with absolutely no clue as to the business being transacted just yards away.