Photos:
Yes, as long as they're just that. If they're in glass frames they won't get to him. (Possible use as a weapon). If they're in an album they might also be stopped. (Possible hiding of drugs behind the photos).
Magazines:
Yes. Anything which can be purchased in a newsagent's shop is normally acceptable.
Money:
Prisoners are allowed to buy their own 'luxuries' (such as sweets, biscuits, etc) from the weekly 'canteen'. (It's not a place; it's just a list of things which are available). They can spend money from their 'earnings' (either from actual work or from attending education classes) but that's only a few pounds per week. Most prisons allow inmates to spend further money (either unlimited, or with a weekly maximum) from what they've got in their personal account. (i.e. what was in their pocket when they arrived or what has been sent in to top up that account). If you want to send money, you should send a cheque or postal order, made payable to 'HM Prison Service', to the Governor of the prison, together with details of the prisoner to whose account it is intended for. (Obviously, you should send a separate letter to the prisoner, letting him know that his account has been 'topped up').
Most other items aren't permitted to be sent in. However most prisons will let you send stamps, pens and writing paper. (They might seem to be very basic items but it's likely that a prisoner would welcome them if it prevented him from having to pay for them from his own account).
Chris