dont mean to be rude, not really a big job - if it is to you then fair enough mate.good your able to go all the way around the building on google maps.id say £200 odd - could be more when seen in real life.depends on the norm factors - frequency etc
hiya dave personally wouldnt touch it eavery 6 mths mate but at aprice£500. take it or leave it situation. u ok got ya txt re merlin ok with the vessels at mo. i need fast water so to speak.