its really a scam...here some of thier emails
UNITED KINGDOM MIGRATION EXPERTS
4TH FLOOR, 153-155 REGENT STREET
MAYFAIR, LONDON W1B 4JE.
E-mail: enquiry.migrationexperts@europe.com
Tel:..................... .....+447045739585
Tel:.............................+447035903332
Fax:..................... ..... +447005-964-173
Dear Mr.********
Your employment in Shell Oil Company London has been confirmed and we will issue you work permit/residence visa to United Kingdom. Please note that you are advised not to send your visa application form to your country Embassy or to your country Immigration Service because they were not given authorization to procure work permit/ residence visa to United Kingdom for you. Your visa will be processed and sent to you from United Kingdom Immigration Service London. You are advised to fill and return this visa application form before 5 days and for further processing of your work/residence visa to United Kingdom.
Carefully download the application form below, print out the form, read it and follow the instructions written on the form to fill it. As soon as you complete the filling of the form, scan the form and email a copy of it to us for proper documentation and processing of your work/residence visa to UK.
Please note that all orders are processed during normal business hours.
Our office hours are Monday to Saturday, 8:30am-5:30pm (excluding Sundays and public holidays).
In the meantime, if there is anything else we can help with please contact customer services
on 07035 9 03 332 (Intl: +44 7035 903 332).
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Regards
Mr Patrick Cole,
Registered Immigration Agent
Migration Expert London