Replacing Imperial Tiles with Metric - Any Problems?

[Mr Sparkle]

I need to replace about 70% of the tiles (Marley Moderns) on the roof

The old tiles are imperial size (slightly shorter and wider) than the 2023 Marley Moderns which are metric size (slightly longer/wider)

Being a mid-terrace house, the neighbouring houses on either side also have imperial size Marley Moderns

My question is, given the size difference, how would you get the last tile to fit/lock into place with the neighbours?

What would I have to do to compensate for the size difference?

 

[Mr Sparkle]

Any roofer with the answer?

 

[datarebal]

Keep them pulled or pushed to fit as need be
There is movement