I have been repairing optical and photographic equipment since 1963
but now concentrate on binoculars, telescopes and microscopes.
Repair / alignment costs.

A standard porro prism binocular is likely to cost around £50 to re-align whilst 
a clean / service and align will be around £60
A roof prism model may cost a bit more, maybe £60 to align whilst 
a clean / service and align will be about £82.
Postage is extra.
I can also renew the tripod thread on a telescope using a steel helicoil for £24.

Please phone before sending  an item for repair to make sure it is one I can do.
Land line 023 8084 2801
Apple mobile 0740 259 0740
Android mobile 079 77 88 1482 with hands-free in car