I don't know of any official records or first-hand accounts available online, although there are photographs online of soldiers resting in Queens College Cambridge, Victoria Park Leicester, and other places soon after the evacuation of Dunkirk.
Piecing together second-hand and third-hand stories (with no original sources cited) it seems that the policy for returning soldiers was:
Get them away from the coast (to temporary sites until permanent camps were organised).
Get the wounded and sick treated.
Get them fed.
Restore morale, discipline, and fitness.
Re-supply weapons, uniforms, vehicles and equipment.
Training, training, and more training.
I am sure that the immediate concern would have been to re-organise the soldiers into effective fighting regiments to be ready to repel an invasion. I doubt if sending them on leave was a priority!