Welcome Aboard Jake.
I may be able to help you with the first part of your query:
QUOTE
'I'll post the names of the ships gradually, starting with two ships which may have berthed in Methil awaiting their final jouneys to Wards at Inverkeithing for breaking.
The ships are the British Charter and British Primrose.'
UNQUOTE
I couldn’t find those two names,so then I started thinking outside the box,and thought “ I wonder if those names have been misread,or read incorrectly through binoculars! “
So I came up with BRITISH CHARACTER and BRITISH PROMISE.When I saw their ultimate fates I think they are the two.
m.t. BRITISH PROMISE Completed 11.42 by Cammell Lairds,Birkenhead for British Tanker Co.Ltd,London(became BP Tanker Co. Ltd. in 1956)
OfficialNo. 168331
G.R.Tons 8,443
Deadweight Tons 12,415
Length 146.9m
Beam 18.9m
Single screw diesel engine 11.5kts
Fate:BrokenUp @ Rosyth 24.2.59 by Shipbreaking Industries Ltd.
http://www.photoship.co.uk/JAlbum%20Ships/Old%20Ships%20Bl/slides/British%20Promise-02.html
http://www.photoship.co.uk/JAlbum%20Ships/Old%20Ships%20Bl/slides/British%20Promise-08.html
http://www.photoship.co.uk/JAlbum%20...romise-09.html
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m.t. BRITISH CHARACTER Completed 12.41 by Swan,Hunter Richardson at Low Walker Yard,Tyneside for British Tanker Co.Ltd,London(became BP Tanker Co.Ltd. in 1956)
Official No. 168246
G.R.Tons 8,453
Deadweight Tons 12,500
Length 148.2m
Beam 18.9m
Single screw diesel engine 11.5 kts.
Fate:BrokenUp @ Bo'ness 19.3.59 by P.& W.MacLellan Ltd.
http://www.photoship.co.uk/JAlbum%20...racter-01.html
http://www.photoship.co.uk/JAlbum%20Ships/Old%20Ships%20Bl/slides/British%20Character-02.html
http://www.photoship.co.uk/JAlbum%20Ships/Old%20Ships%20Bl/slides/British%20Character-03.html
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I know there are others on this site who will help you with your other queries.
Regards
Gulliver