I was just looking on google earth at the area I grew up and noticed a newly built house below number 2. with odd numbers opposite, what number could this house have been given by the council or whoever hands out addresses?
While '2a' might normally come after '2', in the circumstances you describe it almost certainly comes before it.
I've supervised the deliveries of Yellow Pages across several counties and delivered loads of them myself. So I've walked up and down plenty of streets! It's certainly not unusual to see '2a' before '2'. I've even delivered to a street where '15' was in between '9' and '11', simply because the first owner of the house regarded '15' as her lucky number and would only buy the house if she was given it!
thanks both for your usual quick replies, I did wonder about that myself but thought 2A would apply if built between 2 and 4. not before 2. I did start to wonder if it may have even become 1A even though on wrong side of road
A friend's mother-in-law lived in Reading at a house numbered (say) 305a, which was between 307 and 309. The interesting part was that the road was a long line of semi-detached houses and her house had not been built later than the others. ie, the pairs of houses were numbered 303&305, 307&305a, 309&311 etc in that order.