Hi,
You mentioning the T70 suggests you are after a 'proper' digi SLR, rather than another 'bridge' camera as the Fuji's you got/had are.
If you're after entering an SLR system, it is possible to get something if you can stretch a little over £200.
New options..... take a look at the entry level Sony A200 with 18-70 lens. (around £250 if you do some hunting)
A few secondhand options (if you fancy looking on ebay?)
some near new Pentax ist SLR cameras aren't too bad....
Early Fuji's S1 or S2 bodies + lens (they use nikon fit)...a bit big, but capable
Very early original Nikon D1 bodies normally fetch less than £200 (or stretch to a D1h..there's a massive difference in image quality!)...be prepared, they can get battered about during their lives
Very early Canon Eos 1D mark 1 bodies can go for less than £200 (again, you'll need an EF fit lens NOT FD)....again, these 'could' have had hard treatment
Canon 300D + 18-55 (darn it...we sold one recently for £140)!!
Nikon D70 + lens (loads about, and seem to fetch less than the D50 in some circumstances)
KonicaMinolta 5D bodies + lens can go for less than £200 (Sony took their camera business, therefore these are same lens fit as Sony)
All of the above options should produce better results than your Fuji S8000.
Good luck, hope this helps?