Does the colour differ at all to modern 29? wondering if the early versions of it were a little different

I haven't done a side-by-side comparison but it looks like normal warm white to me.

Never heard of new warm white it looks quite deep though i wonder if its the same as the "home lite"?

No, it's not as warm as Home-Lite or Deluxe Warm White or similar. It just looks like bog standard warm white to me.

I believe the New prefix was added to the colour names of some companies between about 1946-1948, following the introduction of the calcium halophosphate coatings. These phosphors were first introduced by GEC in 1946 and by 1950 their technology had been licensed to or adopted by every fluorescent manufacturer worldwide, even the Americans, because they were non-toxic, much more efficient and considerably cheaper than the original zinc beryllium silicate phosphors. Since the colours were slightly different after this upgrade, the change of name helped to ensure that only lamps of the same type were used in an installation. So if this is a post-1946 lamp, its colour will indeed be identical to modern Colour 29 / 530.

Thank you for that useful explanation, James. It makes sense.