Dental Implants vary in costings depending on each individual situation. A rough guide would be £1400-2000 for placement of an implant and approx £500-1200 to restore the implant a good guide is approx £2500 for an implant,the fixtures and crown ( new tooth). There also many different types of fixtures and crowns depending on cosmetics etc. The extent of what you need depends on the depth, density and quality of your bone. Timescales also vary from as little as two months to twelve months once again depending on your own bone. I am sorry this is so vague but it really is very individual.
I hope this helps