DB merge assistance please

[adam30]

Hi All

Can i please ask for some help on a GB address database, i have met with a brickwall.

Basically, i am looking to merge post code data with latitude & longitude, i have googled and found the following instructions as shown in the link below. Now having completed this process, i find some of the merged results in the wrong area, for example: results are turning up in the North sea rather than Kent.

Convert between Latitude/Longitude & OS National Grid Reference points

Now what i am hoping for is either an application preferable free-share (but also willing to pay for an app) that i can use or a detailed list of instructions on how to complete.

I obviously understand you guys are busy bees and i am very new to these forums but would really appreciate some assistance.

Thank you Kindly

Adam