Projection Sentinel-1 datasets pre-processing

I’m pre-processing S-1 GRD datasets that will be used for analysis in epsg 27700 in QGIS. Should I re-project to 27700 during pre-processing or use 4326 and reproject in QGIS?

Less processing steps introduce less errors. So, I would reproject directly to EPSG:27700

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Thanks yes I can see the benefit.