I've arrived Doha last month. If UK salary is higher by 30% then I believe your after tax salary in UK will be = Qatar's salary, so about to breakeven. If u have free accomodation here then u probably save that over the UK living. It is an OK offer and you should look for a job through recruiting companies from UK. Its better bec I am not sure u can find one after arriving here. Email me on [email protected] for any inquiries.