Sorry, I don't know their new numbers, but, based on the above, does this 3-aspect rule also apply to the signals in the Down direction formerly known as B152, B252 at Lawrence Hill and B154, B254 at Bristol East which were previously four-aspect? Thanks in advance

Prior to 1970, there was an additional crossover(s) at Narroways to take trains onto the Mains from the Reliefs and, if I recall correctly vice-versa.  This was removed when Bristol was resignalled and the Mains were plain-lined instead and controlled by Automatic Signals

stuving, I was referring to the layout post 1970 when Bristol Panel opened.  There were most certainly four tracks from BTM^▸ (Bristol Temple Meads (strictly, it should be BRI) but BTM is a commonly used alternative)) to Dr Days then - I've seen the Yellow Perils on the archive in the SRS website.  Thus the pointwork between Dr Days and Lawrence Hill could most certainly have been rationalised to only allow movement from Reliefs to Mains in the Down direction and vice-versa in the Up direction - as has been the case since the track rationalisation in 1984

Thanks to both of you (Ellen and Sand T) for the info you have provided.  I guess the facility that existed prior to 1984 to move from Main to Relief and vice-versa in either direction between Dr Days and Lawrence Hill) was merely a duplication of the facility elsewhere and therefore the only potential benefit of reducing the four-tracks to two meant that the unnecessary pointwork could be eliminated.

Nice to see four tracks back at Lawrence Hill, although I notice that the points layout is the same as previously i.e. you can only cross from Reliefs to Mains in the Down direction and from Mains to Reliefs in the Up direction.  Why has the layout not been constructed so you can cross from Mains to Reliefs and Reliefs to Mains in both Up and Down directions (per the layout prior to 1984?) Thanks in advance