wow - thanks a lot
tipichris - that worked a treat!
sorry i've been away for a few days and not had chance to visit here recently.
yes, they are very highly detailed uk maps - they even show a little island in a pond in my garden that is just about big enough for two people to stand on
i happened to be in a fire engine the other day and noticed they were using this map on their fancy gps system (with extra overlays for hydrants and other firey things).
good to know that they are under the OS open licence too!
maybe menion would consider adding this source to locus in the future?
once again, thanks for your help tipichris - much much appreciated. 8-)