To have all your teeth removed and replaced with implants is a fairly drastic step.  There may be other treatment options available to you. 

All practices charge different fees, but as a ball park guide for full arch implant retained bridgework you would be likely to spend upwards of £15,000 per arch.

As I say this may not be the most appropriate treatment option for you.

The best thing to do would be to have  consultation with a dentist who can look at your dental condition, disucss what you hope to achieve and then work with you to build a plan for moving forward.

I hope that this helps.

Regards

George Glover