Absolutely. If offshore processing is really necessary (and that's a huge if), we could fund a location in France (where most of them come through) and process them there.
Whilst you may not think this, I do want to clarify one thing that some people seem to have misunderstood. This policy is not about simple offshore processing. It is about permanently sending people to claim asylum in a different country. Some people seem to have got the wrong end of the stick and thought it was about offshore processing but it isn't.
edited to say I've just you say in another post "being sent to Rwanda to await the outcome of that claim, and finally being allowed to settle in the UK". That is NOT the policy. The policy is to send that person to Rwanda full stop and leave them there to claim asylum there (not waiting to claim asylum in the UK). The policy is a lot more dangerous and inhumane than simple offshore processing.