I think this is now overgraded. T5 is not something likely to be encountered on any widely used 'path' in the Lakes or most other places in the British Isles.

Lord's Rake is (or certainly) was an unpleasant ascent, and it does have some objective dangers over recent years from rock fall etc. This gives a good feel for the crux on a standard T5 route https://www.hikr.org/gallery/photo2405005.html?post_id=122152#1. A steeply angled slab with exposure down to a glacier. This is significant harder than anything on Lord's Rake.

I realise that the SAC Scale may be interpreted differently in the UK, but in the longer term it is better to keep to the original definition. Not only does this help consistency, but will not result in British hikers being misled as to what the T4, T5 and T6 alpine hiking grades actually entail.