Swiss has extended their current promotion for First Class travel to most of Asia, Africa, South America, and the Middle East. The promo basically a 2-for-1 with fares ranging between €2200 and €3000 ( £1900 and £2600). Perhaps the best deal is the €2400 fare to Shanghai or the €2900 fare to Sao Paolo.
The sale has been extended and now ends on 12 July 2017. Valid travel dates for this deal extend all the way out to 31 March 2018 so there is plenty of availability for the deal.
So, as long as you can originate your travel from the UK, you can take advantage of this decent offer. Keep in mind you flights from the UK to Zurich will be in Business Class and can include flights operated by Lufthansa or Austrian that ultimately get you to ZRH.
If you play your cards right, you can book your UK flight to Frankfurt via Lufthansa, visit the First Class Terminal, and then fly to Zurich where you can enjoy the SWISS First Class Lounge before your First Class flight!
Alone In SWISS’ First Class Cabin