There is several good places to buy tubs. You can go to your local plumbers merchant or look online. Probably a better bargain online for the same brands. Victoria plumb I have used many times.
plumbworld - better bathrooms or victoria plumbing - Best deals on Bathtubs
There are number of outlets that provide good quality bathtub like Victoria bathroom, Depending on how much you really want to spend
I would avoid the DIY sheds as the quality is poor, try a local bathroom store
the good paint it"s Victoria plumbs, bathroom store. we can"t to compare Victoria plumb with other shops find at corner Streat .I suggest items for bathroom from Victoria plumb
Graham's or the bathstore would help you out with this