I was down the river in the spring and the beach below where that thing is moored was covered with oil which had leaked from some piece of equipment they were using to repair that boat. When I mentioned it to the bloke with all the bars on his shoulder he basically said 'so what?'.

I dialled a random number on my phone and had an imaginary conversation with the EA telling them all about the ducklings paddling in a pool of oil making sure he could hear me, He was issuing orders to the blokes repairing the boat to clear it up before I had finished my 'conversation'.

All this talk of heritage is pure bolloks it's a business and nothing more, it's owned by a consortium of local business men and the Admiral lives in a caravan behind the meadow pub. If they want to turn the clocks back a couple of hundred years they could start by sending Telfords feral youth down the mines.
Jes is right though, a lock will cost many millions, this is a place where the banks are constantly slipping into the river, In 1713 the bank slipped so much it blocked the river for over 24 hours and the river dried up all the way down to Stourport. The local Vicar conducted a service on the landslip and a few hours later the 'dam breached and the ensuing flood sunk all the barges which were moored at Bridgnorth waiting for the winter floods so they could continue their journey up stream.
All the modern bridges around here are only anchored to the bank at one end, the other end is carried on rollers, to prevent them buckling as the banks continue their downward slip.
If you do visit the area check out the famous Iron bridge, there's a few decent day ticket swims upstream on the right bank, most of the main spars have stress fractures and are repaired with steel plates, the apex in the middle of the bridge is now an estimated three feet higher than it was when the bridge was built simply due to land slip...And this is right in the middle of town.
The last boat that operated there a few years ago sunk when someone shortened one of the mooring ropes so the bow was forced under water the night the river rose by 12 foot.........My old fishing mate hated that boat and without fail he would put a couple of pouches of maggots in the saloon every time it passed him....And he wasn't alone in this pastime.

Jack died after suffering a series of strokes over a couple of years, I visited him in the nursing home the evening after the boat sunk and after I told him what had happened to it he managed a laugh, it was the first time he had laughed for weeks....It was also the last time he laughed as he passed on later that evening. With any luck he will be laughing again this winter if we get another sudden flood.