Quote 1 (from 2011 but clearly relating to around 2007):
"Birmingham City Council used to charge £720 to move a lamp column and I think £60 per square metre for the dropped kerb. That was about 4 years ago though"
Source:
http://forums.moneysavingexpert.com/showthread.php?t=3630655
Quote 2 (also from 2011 but relating to 2008):
". . . three years ago, cost £1250 plus VAT"
Source:
https://www.pistonheads.com/gassing/topic.asp?h=0&f=207&t=953536
Quote 3 (from 2008):
"Moving a lamp post will cost you between £1500 - £2500 ( I was enquiring with the highways dept myself last week about a driveway)"
Source:
http://www.sheffieldforum.co.uk/showthread.php?t=330011
Response to Quote 3, on the same 2008 thread:
"That doesn't surprise me at all. I know a lad who crashed his car into a lamp post in Sheffield about 15 years ago. He had to pay £1100 to the council for it to be replaced"
Based upon that lot, I'd guess that £1500 might be a reasonable 'ball park figure'. It's probably best to get the lamp post moved
before extending the driveway though ;-)
http://www.telegraph.co.uk/news/newstopics/howaboutthat/10028299/The-driveway-that-no-car-can-use.html