Details of your roster so I can get the beer please.
Check
http://www.pprune.org/forums/showthr...ight=altimeter (via search
)
............and this refers you to 5.3.1 of the UK AIP EnRoute section which covers UK procedures.
Outside UK, you should ALWAYS check the local 'differences' in altimeter setting from UK/ICAO procedures in case they are different.