BTW, as you have some splits in the wood, I suggesting some EvoStik wood glue (blue bottle, which is damp proof), clamps and glue syringes. Wedge the cracks open with a knife, inject the glue, remove the wedges, clamp tight, leave 12 hours. It is very strong.
Thank you so much for your advice and help throughout the thread.Found one, this is not a Legge but looks similar. Low price.
Narrow Style 50mm Door Sashlock (35mm Backset) 3 Lever Mortice Sashlock Door CP | eBay
35mm Backset Distance from Keyhole to edge of Faceplate. Backset 35mm | Case Width 50mm. With a case size of only 50mm and a width of only 22mm, this super slim sash lock can allow a35mm Backset Distance from Keyhole to edge of Faceplate.www.ebay.co.uk
I can't thank you enough.
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