You would be correct in saying it is a Scottish plate if it was SA, but it doesn't look like a UK plate to me as it seems to be all letters SAJDEVA or has been doctored in some way if it is SA10 EVA or SA11 EVA, in which case the spacing is incorrect as well. I cannot make out the country in the blue section left-hand of the number plate.
SA10EVA does not come up on the DVLA car check but SA11EVA does - it is a white Vauxhall!
Being a foreign visitor does not give an excuse for such driving, but could make it difficult for the Police to take action.