DoubleQ:
Hi dudes.
as always 2xQ going to thow out the rattle (drop a spanner in the works) etc.
As he recalls reading some were in the regs,
That Tachograph records are required to be maintain/recorded in “Universal Cordinated Time”
SO I wonder if this is the same for Tachograph records
( I.e are we required to write, "Time recorded in BST on the disk back ) ?
Digital tacho units stay on UTC time and cannot be changed by the driver, or no more than 1 minute a week anyway. Analogue tacho units must be set so they record your activities in the time for the country of registration of the vehicle.
DoubleQ:
Mr “spanner in the works” out 
<Hands spanner back to 2Q> You may need it on another occasion. 
Hombre:
nomad98:
Dont forget the six hour rule,
Say you start at 21.00hrs & take the work time to the max it would normal to take half hour before 03.00, but tacho is hour behind so you would have to have half hour break by 02.00hrs.
What six hour rule??
For the Working Time Directive. Something Europe brought in, Britain has sort of gone along with - but not enough to really worry about, and the rest of Europe, especially countries like Spain, has ignored. 
Phew!! I had a horrible thought that I have been doing something very badly wrong for a moment on my tacho hours.
As I live and work out of Spain I wont worry about it then.
“Analogue tacho units must be set so they record your activities in the time for the country of registration of the vehicle”
Cheers Coffeeholic… clarified
regards 2xQ