But despite health concerns over the antennas, clear information on where telecoms firms install their kit is hard to find.

The council is only able to supply residents with a long list of mast sites covering the whole of Dacorum.

And information available over the internet from national telecoms watchdog Ofcom is no longer up to date.

Click here to see the phone mast map.

So, to keep our readers in the picture, The Gazette has created the town's first mobile phone mast map.

Using data from all five major mobile phone firms, we have created a chart on our website showing the locations of all telecoms antennas in the town today.

From masts on top of lampposts to those disguised as trees in fields, every bit of kit Vodafone, Orange, T-Mobile, 02 and 3 say they have installed in Hemel Hempstead can be seen clearly for the first time.

To see The Gazette's mobile phone mast map for Hemel Hempstead, click on the link below.

For more information on each mast, just click on the blue markers.

And to change the view to a satellite image, use the menu in the top right corner.

Campaigner Yasmin Skelt from national group Mast Sanity has welcomed the move to create a map.

She said: "People are much more exposed to technology now than they used to be.

"It is the unknown, long-term health effects we are concerned about."

Chief spokesman for the Mobile Operators Association, Christine Jude, said the Government had suggested all local authorities should produce mobile phone mast maps.

She added: "More than 30 authoritative expert scientific reviews undertaken both in the UK and around the world during the past six years have not found adverse health effects caused by mobile phone base stations operating within the international health and safety guidelines used in the UK."

Please note that due to different mapping systems used by mobile phone firms and Google, masts may not be plotted at their exact location.

If you wish to tell us the precise location of a mast or the location of a mast not on the map, call reporter Jonathan Matfin on 01442 898443

CLICK HERE and tell us your views on mobile telephone masts