The most type of common “deposit + get” offer in the free spin world revolves around the humble tenner, which also doubles as the minimum deposit at a lot of online casinos. As you can imagine, the quality and value of the offers vary wildly from the ultra generous combo of no wagering requirements and no max winnings with a decent spin value, through to the, well, less generous offers.
Free Spins From a £10 Deposit

William Hill have a straight forward offer for your tenner. Make a deposit of £10, stake it once, and you'll receive 200 free spins on the popular Big Bass Splash slot. The free spins are worth 10p, but the offer is let down by the addition of both wagering requirements (10x winnings) and a max win of £30.
You will need to use promo code WHV200 when signing up to be eligible for this offer, and also opt in on the promo page. There is also a couple of time limits to be aware of: the offer must be claimed within 7 days of registering and you have 72 hours to use the spins after they've been credited. You'll also need to complete the wagering requirements within this 72 hour window.
Value wise this offer isn't horrific, but the terms leave a little to be desired. Especially with the addition of the wagering requirements and max win. There are probably better offers to claim first, but not a bad one to pick up at some point if you've run out of the better ones.

Your £10 will earn you 100 free spins at Paddy Power, and that's on top of the 60 that they give you just for signing up. Meaning there's a total of 160 free spins up for grabs. The spin value is fairly reasonable as well at 10p, but the best part are the terms: no wagering requirements and no maximum winnings.
For the free spins you have a small selection of games to choose from including popular titles in the Fishin' Frenzy and Deal or No Deal franchises, plus some Jackpot King games if you want to give that no max winnings term a run for it's money.
All in all this is a neat little offer with some very player friendly conditions, which bodes very well for the site in general (spoiler: the promos at Paddy Power are generally quite good). Just make sure you use promo code PGCTV1 when signing up. Free spins can then be claimed from the Promo Hub within your Paddy account.