Two definite ones for me the Blackboys in Sussex which was and still is a Harvey's tied house and the Bryn Tyrch in Capel Curig. This is one of three hotels with climbers / walkers bars stretched along the A5. I haven't been there since the early seventies!
A possible is the Five Horseshoes at Maidensgrove. It's not one of the original Brakspear tied houses which is why I can't be sure.