Totesport

The 25GBP freebet at Totesport is a good way to do a smaller test sports arb. It's a 100% sportsbook bonus match-play. This means on your first bet, Totesport will match it with an equal bet, up to 25GBP. Totesport does not put any rollover terms in their t&c, however I would probably rollover 3xdb just to be fair. Totesport may offer reload bonuses, but I haven't seen any yet.

Totesport is mostly geared towards soccer betting. The best exchange to use with soccer betting is definitely Betfair. There is huge liquidity at Betfair (meaning there is always plenty of funds available at each event to place arbs with). The part that sucks about Betfair is the 5% commission they charge on winning bets. Even with that in mind, Betfair is the largest sports exchange in the world.

By the way, there are tons of promos out there for 25GBP in free bets at Betfair, too. Betfair doesn't advertise this on their website, so you have to find another sports website to go through. Just search on Google for "betfair 25" and you should be able to find hundreds of sites with the current promo.

With Betfair's 25GBP promo, you are now working two 25GBP bonuses at the same time. Remember, Totesport only counts your very first sports wager as the bonus.

Totesport

Betfair