Looking for coastal route tour advice

Hi, One and All,

We are Mark, Julie and our dog Harley. We have recently returned to caravanning after some 25 years due to our dog being unable to travel abroad due to age and health issues. We are looking to take our first long road trip from this weekend and we are seeking advice on good coastal routes and sites to stop over at along the way. We will be starting from Newquay in Cornwall and looking to head up the west coast via wales and on up into Scotland, then back down the east coast ending in Portsmouth around December. Any advice welcomed and thanks for taking the time to read this. 
cheers 🍻

Mark and Julie 

Moderator Edit:

Moved from Introductions in the hope that more people will see your post earlier and, hopefully, give you some advice ready for the weekend.