Simmonds is currently on trial at the ITC in Bath, where 200m breaststroke silver medallist from London 2012 Jamieson trains, having followed her coach Ben Titley out of the East Midlands.
Titley left Loughborough to become head coach at the National Swim Centre Ontario in Canada while British Swimming are looking to set up a permanent sprint programme in Loughborough.
That does not suit Simmonds, who despite winning European 100m backstroke silver in 2010 only qualified for the 200m equivalent at London 2012, finishing an agonising fourth.
And she does not entertain the idea that she has moved to Bath because of the success of Jamieson at London 2012 instead putting it down to an increasing sense of loneliness in Loughborough.
"I needed a change, a completely different stimulus," said Simmonds, who will now train under Dave McNulty in Bath. "Technically I'm still on a trial but it is going well, I like the set-up, I like the group.
"We are all in a similar age-range, swimming 100m and 200m, not just freestyle but individual strokes and I did not come here just because MJ had won a medal at the Olympics.
"This may be a bit of a transition period for me but I think, in the long run, it will definitely be a very positive thing. This kind of set-up is perhaps more suited to what I need to get into the medals.
"One of the things I really like is there are other sports around. The pool was quite isolated in Loughborough but here all the sports are together. You sit in the cafe and Dai Greene walks past.
"It is an elite training centre and you do not feel like you're the only sport having to get up at 6am for training, you can see them on the sprint track and in the gym doing exactly the same.
"That obviously influenced my decision, being somewhere I would enjoy living and have a life outside the pool. It's an absolutely lovely place to be, quaint and pretty."