Sign up offers get all the headlines, but bettors don't want to be neglected after they have played through the welcome bonus. That's why many betting sites have a range of existing customer bonus offers on display and they constantly provide value to users.

It's all well and good betting sites acquiring customers, but in order to retain them, they need to give them a reason to come back. And you, the punter, can be the beneficiary of the promotions that are offered.

Welcome offers are a nice short-term fix, but existing customer offers are more important in the long run.

Free bet promotions are common, and can be part of a weekly ongoing offer or can pop up around big events. Either way, you are surely more likely to bet with a site that rewards you with a free bet as opposed to one that doesn't.

Likewise, if your bookie offers acca insurance or an acca bonus, then you have an added incentive to use them for your weekly football accumulators.

Existing customer bonuses are self-explanatory as a concept, but they can be offered and credited in many different ways. Betting sites can be creative with how they implement promotions for existing players, but none of them are too complicated.

Most betting sites have a 'promotions' or 'offers' tab in which you can view all of the existing customer bonus offers, but they may also be displayed on the home page or within different sports sections.

You may be notified of existing customer promotions - some of which may even be specific to you - by email, text, push notification, or otherwise.

There are far more different types of existing customer betting bonuses than there are variations of welcome offers. Because of this, over one weekend you could claim a handful of completely different promotions across multiple betting sites, thus getting lots of value across the board.

Some promotions allow you to get your money back if certain things happen, whereas others provide opportunities for you to win extra money on your successful bets.

Whether you are a conservative punter or like to shoot for the stars, there is sure to be a suitable existing customer betting promotion for you.

Everybody loves free bets, and while they are often used as part of welcome offers, there are lots of free bets for existing customers on several betting sites as well.

Some bookmakers, such as Betway and MansionBet, have a free bet club in which you can get a weekly free bet by placing a certain number of qualifying wagers.

Others may pop up with free bet opportunities around big events, or have seasonal deals in which punters can earn free bets by meeting requirements.

Acca bonuses are pretty much always for existing customers, and they give punters the chance to win extra money when placing a successful multiple bet.

Terms can, of course, vary greatly, as some betting sites have acca bonus deals for football only, whereas others open it up to all sports.

Minimum number of selections and minimum odds are some of the key terms to look out for, but if you are someone that likes to place parlays, acca bonuses or acca boosts are great.

Everyone who places accumulators has experienced the agony of one team letting them down, and acca insurance is a great promotion that helps offer some consolation.

Existing customers can claim this offer, and the idea of it is that users get their stake back if one team lets their acca down.

The refund is usually capped, typically at £10 or £20, and depending on the terms, it could be paid either in cash or free bets.

It is often a football-only existing customer bonus, but Paddy Power allow all sports, making their acca insurance arguably the best.

Anyone who bets regularly will know that there are many opportunities to get your stake back on certain bets thanks to the various money back offers that existing customers can claim.

Like with many other types of bonus, these can be long-term offers that are available for a whole football season for example, or they could appear around big events.

Money back deals are big within horse racing, with terms such as finishing second, being beaten by the favourite, or falling over a hurdle allowing users to get a refund - usually as free bets.

You can find enhanced odds on most UK betting sites these days, especially the classics like Betfair, Coral, and BetVictor.

These offers won't necessarily be found in the promotions section, they will just be displayed on the betting site or within the specific event that you are looking at.

Bookies might have an 'enhanced odds' or 'price boosts' tab in which you can view certain specials, but often they will just be littered all over the place.

In some cases, you can choose which markets you want to boost. Ladbrokes, William Hill, and Unibet have all been known to run these types of promotions - namely within racing - in which the user has full control.

One of the newer types of existing customer betting offers to be introduced is early payout, in which if your team leads by a certain number, you will be paid as winner.

This promotion can be applied to football, basketball, baseball, ice hockey, American football, and other popular sports.

Bet365 leads the way when it comes to early payout, but they are not the only ones to offer this to their users.

If you bet on horse or greyhound racing, best odds guaranteed is one of the most important promotions for existing customers.

'BOG' ensures that you get the best price out of the fixed price you take at the time, or the starting price of that particular selection.

For example, if you back a horse at 4/1 in the morning and by the start of the race it is 7/1, you'll be paid at 7/1 if it wins.