Betsafe are offering a free £10 bet to use at the weekend if you place 6 x £10 bets from Monday to Friday at odds greater then 1.5 (1/2).
Using matched betting (if your familiar with this) could result in a guaranteed profit of £5. If not just take advantage of the free bet.
This offer can be claimed every week.
Full terms and conditions:
https://promotions.betsafe.com/mobile-weekends-uk/en/