Bargain Hunter: BT improves its mobile reception with 'incredibly competitive' deals

BT returned to the mobile phone market this week with deals from as little as a fiver a month. The telecoms giant is offering SIM-only bundles of 4G data, call minutes and texts from £5 a month for its existing BT Broadband home users. The deal will be a tenner for non-customers.

The company – which is currently in the process of merging with the mobile firm EE – says the new 12-month contract deals are aimed at customers who might want to keep their existing phone but add a bundle of 4G data, minutes and texts.

Ernest Doku, telecoms expert at uSwitch.com, said: "After a long time away, BT is throwing its hat back in the mobile ring with an incredibly competitive set of SIM-only tariffs – provided you're an existing customer. They get a deal that plants BT firmly ahead of TalkTalk and Virgin from just £5 for 500MB of 4G data."

There's also a large 4G data offer of 2GB, with unlimited texts and 500 minutes for £12 a month.

A tax break for married couples worth £212 a year

A reminder: married couples can register for a new tax break that, from next month, will help them save up to £212 a year on their tax bill. Couples can register their interest in receiving the break at gov.uk/marriageallowance.

Wash down the sandwich with a free bottle of Coke

Thirsty? You can get a free 500ml bottle of Coca-Cola Zero by downloading a voucher at freecokezero.co.uk and redeeming it at your local Greggs or One Stop store. The offer runs until 10 May.

Discounts on Google Play gift cards if you go to Asda

From Monday you'll be able to get 10 per cent off Google Play gift cards at branches of Asda. The deal runs until Sunday 12 April, and you can get the cards in £10, £25 and £50 denominations.

Buy in bulk now before the price of stamps goes up

The cost of sending a letter is going up on Monday. The price of first and second- class stamps will climb by 1p. From 30 March, a first- class stamp will cost 63p and a second-class stamp will be priced at 54p.

Meanwhile the cost of sending a large letter first class will go up by 2p to 95p, while sending the same letter second class will cost 1p more at 74p.

You can beat the increase by buying first or second- class stamps before then. Get a book of stamps, which are simply labelled first class or second class, and you'll be able to use them after the price rise has come into effect, even though you paid the old price for them. You can buy books of four, six, 12, 50 or 100 at post offices or online at postofficeshop.co.uk.