Found this link which gives 4 free trial issues.
More importantly: No credit card details required.
Other mags trials you have to remember to call them to cancel subscription and call your bank to cancel Direct Debit.
"If you decide you like TIME, youll receive 50 more issues 54 in all for only £34.99. That's 85% off the cover price! (Best deal I have come across is 75% off subscription). You'll also receive your choice of LONELY PLANET TRAVEL GUIDE FREE with your paid subscription. If you dont want to continue with TIME after your trial period, simply return your bill marked "cancel" and owe nothing."