Yes an interesting subject Steve with many accounts.My favourites is the Prof. R V Jones, who worked for the RAF, which details the V 1 testing and rocket experimentation at Peenemunde. This is where Jones stands up to Lindemann , Lord Sherwell, and Churchill's guru on science in the cabinet war meeting. He details the intelligence they have gained through photos, agents in the field, and the radio information being passed by the Germans.
After the meeting the raid on Peenemunde was organised and carried out.
Jones was all for making the main purpose of the raid to obliterate the machine shop. He contended that the design work was all but complete. That the wiping out of many scientists was to late they had finished there work. So they went for the scientists rather than the machine shop.
Unfortunately the raid did not wipe out the senior men neither did it destroy most of the plant and most importantly the machine tools. These were then transported to other sites to continue the work.
Most unfortunate is that the worst hit, by pathfinders marking incorrectly (such is war), the foreign and pressed workers premises which was all but obliterated.
So it was half successful. Only speculation can predict the outcome if it had been a greater success. Possibly the virtual end in terms of time for the V2 rocket.
On the Southampton being targeted by the V1. Hardly likely. One I doubt that the German knew what was going on in Southampton. Two the position they sited their ski take off's in France was to greater distance from Southampton. The V1 best distance being 160 miles.
If you want a great read "Most Secret War" R V Jones. How much he and his team did for Britain and the war effort is impossible to calculate. The books as written is valuable in the fun that could be had in such an important pursuit and at such a time. Very funny in parts. Plus it is written in layman terms.
Laurie