Sorry for the delay in replying. The line has been cleared for use ahead of a few gauging modifications needed at Moreton bridge, between Saundersfoot and Tenby, and Tenby station itself.

I was on the 1535 from Tenby on Saturday and passenger figures were reasonable for this time of year - the morning departure to Paddington is always the busier of the two trains.

Both return services on Saturday used HSTs^▸ (High Speed Train (Inter City class 43 125 units)).

Relaxez-vous.... the entire line to Pembroke Dock has been cleared by Network Rail for IET^▸ (Intercity Express Train - replacement for HSTs (manufactured by Hitachi in Kobe, Japan)) use, although there's as yet no news from GWR^▸ (Great Western Railway) as to when the first new train will use it.