Staff working for a doctors' union are to go on strike for the first time in 180 years.
The British Medical Association (BMA) represents doctors in the UK and administration, IT, research, press office and other workers will hold pickets across the country on Wednesday.
It comes the day before medical staff, who are members of the BMA, go on strike themselves for the first time in 40 years.
A picket line will take place outside the headquarters of BMA Scotland in Edinburgh as part of the industrial action.
The staff are all members of the GMB union and voted to strike after they failed to come to an agreement over an increase in staff pay.
Anna Meyer from GMB said: "We are very disappointed that there has been no response to our calls for more talks and for an improved offer. GMB members are striking reluctantly as this is the first strike action at the BMA in 180 years.
"The offer is well below inflation and the BMA can well afford to make an offer in line with inflation."