3000ft here in the UK. Unless specified otherwise:

http://www.caa.co.uk/docs/64/DAP_ACD_8_Altimeter.pdf

Paul

"BTIZ" wrote in message
news:zqYnb.103692$La.22441@fed1read02...
The US uses 18,000 or FL180 as it's "transition" altitude.. other
countries
us other altitudes, some as low as FL040 or 4,000ft MSL.