Absolutely. It's in no-one's interest not to have reciprocity on this. If the EU choose to make an issue out of it, it will only alienate some of their member states, like Spain, who will want very much to keep the revenue stream from the British ex-pats. And with mutterings of discontent in several parts of Europe, that would not be in the EU's best interests.this item can be covered on day one of the negotiation if the EU want, put it number one on the agenda and agree reciprocal rights of existing members from that date. if the EU want to attach a raft of conditions, then that's their position, and if we'd promised it in the bill we have to accept them all.